home *** CD-ROM | disk | FTP | other *** search
- *-------------------*
- * Tutorial : screen * Wed Aug 21 21:31:25 1991
- *-------------------*
-
- ===================== Commands used in this tutorial =========================
-
- active Set active logical window
- awin Open the 'Rexx' logical window
- color Set RGB colors for PowerVisor screen
- colrow Set the number of columns and rows for a logical window
- current Make another logical window the current one
- dwin Open the 'Debug' logical window
- fit Fit the logical window to the visible size
- home Go to the home position of the logical window
- list Show a list (tasks, libraries, message ports, ...)
- log Log output to a file
- memory List memory
- mode Set PowerVisor preferences
- move Move a physical window
- on Execute command on other logical window
- owin Open the 'PPrint' logical window
- prefs Set preferences
- refresh Refresh a command on the 'Refresh' logical window
- rwin Open the 'Refresh' logical window
- screen Set PowerVisor on another screen
- setfont Set another font on a logical window
- size Size a physical window
- to Redirect output to a file
- xwin Open the 'Extra' logical window
-
- ===================== Functions used in this tutorial ========================
-
- cols Ask the number of columns on a logical window
- getactive Ask the active logical window
- getlwin Ask the current logical window
- getcol Ask the prefered number of columns on a logical window
- getrow Ask the prefered number of rows on a logical window
- lines Ask the number of rows on a logical window
-
- ============================== Introduction ==================================
-
- The screen and window of PowerVisor are very customizable.
- Interlace, pal, ntsc, vga, even the A2024 monitor, colors, fonts, ... .
- All these characteristics and more are customizable. Read this tutorial
- for more information about these options.
-
- ========================== The PowerVisor Screen =============================
-
- Normally PowerVisor uses an ²Intuition screen for output.
- The default screen has the following characteristics :
-
- - ²2 bitplanes (four colours)
- - ²non interlaced
- - ¹PAL, ¹NTSC, ¹VGA or ¹A2024 depending on your ²preferences settings
- if you use AmigaDOS 2.0.
- If you use AmigaDOS 1.2 or 1.3 PowerVisor will open a screen as big as
- the ²workbench screen would be if it is not interlaced.
- - Size is inherited from the preferences settings. PowerVisor uses
- ¹overscan if you set overscan in preferences (only AmigaDOS 2.0).
- - ¹Colours are inherited from the Workbench.
- - ¹Topaz.font 8 is uses for all text (default).
- - The screen is a ²public screen if you have AmigaDOS 2.0 (with the
- name ¹'PowerVisorScreen').
-
- The PowerVisor screen is partitioned in ²logical windows (see the Logical
- Windows section of this tutorial file). PowerVisor gives you the option to
- open its window on ²another screen, to change the colours, switch to
- interlace, switch to another monitor (2.0) or to use more bitplanes.
-
- Note that in this tutorial we constantly talk about three different things :
-
- - The ²PowerVisor screen : This is the Intuition screen. It is possible
- that this screen does not exist. In that case, PowerVisor resides
- on another screen.
- - The ²PowerVisor window : This is the Intuition window that normally
- lives on the screen. When we talk about the PowerVisor window we
- are talking about the physical window 'Main'. PowerVisor can have
- more physical windows.
- - ²Physical windows : These correspond directly with Intuition windows.
- - ²Logical Windows : Each physical window is partitioned in logical
- windows, do not confuse a logical window with an Intuition window.
-
- ========================== Reading this chapter ==============================
-
- All the examples in this chapter assume that you have an ²NTSC monitor.
- If this is not the case replace 'NTSC' with 'PAL' and 'PAL' with 'NTSC'
- (in your mind) when you read this chapter. I also assume that you have
- started a vanilla PowerVisor. This means that there was no
- ¹s:PowerVisor-config and a minimal ¹s:PowerVisor-startup when you started
- PowerVisor.
-
- ========================= Interlace and Monitors =============================
-
- If the PowerVisor screen is open (default when you start PowerVisor),
- you can switch to interlace or to another monitor using the 'mode'
- command (This command is also used for other settings, see the
- appropriate documentation). The 'mode' command with screen arguments
- has no effect when PowerVisor resides on another screen.
-
- The following 'mode' arguments have something to do with screens or
- windows :
-
- - lace switch to ¹interlace
- - nolace switch to ²non interlace (default)
-
- - pal ²pal monitor (AmigaDOS 2.0) 640x256 or 640x512
- - ntsc ²ntsc monitor (AmigaDOS 2.0) 640x200 or 640x400
- - vga ²vga monitor (AmigaDOS 2.0) 640x480 or 640x960
- - viking ²a2024 monitor (AmigaDOS 2.0) 1024x1008
-
- - fancy use ²two bitplanes (default)
- - nofancy use only ²one bitplane
-
- - sbottom ¹sizegadget is included in ²bottom border (default)
- this option is only useful if there are more physical
- windows, or if the 'Main' physical window is a
- ²non-backdrop window.
- - nosbottom ¹sizegadget is included in ²right border
-
- Here are some examples :
-
- < mode lace nofancy <enter>
-
- You will now get a one bitplane interlace screen (if you have enough
- memory).
-
- Note that PowerVisor only uses half the interlaced screen for output
- (try some commands with a lot of output to test this: 'help commands',...).
- This is normal. We will see later how you can make the logical window
- ²full size again (in the Logical Windows section).
-
- Back to normal with :
-
- < mode fancy nolace <enter>
-
- =========================== Setting the colours ==============================
-
- Try :
-
- < color 0 0 0 7 <enter>
- < color 1 15 15 15 <enter>
-
- This will install a blue background and a white foreground. (Note that
- this command only works if PowerVisor is on its own screen (see later for
- more info)).
-
- ======================= PowerVisor on other screen ===========================
-
- You can open the ²PowerVisor window on each screen available in the system.
- However, when you do this you must be very careful NOT to close the screen
- where PowerVisor resides.
-
- Example :
-
- List all screens :
-
- < list scrs <enter>
- > Screen name : Address Left Top Width Height FirstWindow
- > ---------------------------------------------------------------------------
- > PowerVisor (V1.00/: 07EA28F0 0 0 692 442 07EA67B8
- > Workbench Screen : 07E280D0 0 -582 692 1024 07E1F0F8
-
- For example, let's open on the ²Workbench screen :
-
- < screen Workbench <enter>
-
- You can now change the size of the PowerVisor window :
-
- < size main 600 150 <enter>
-
- This command sizes the specified ²physical window ('Main' in this case). The
- 'size' command only works on ²non-backdrop windows.
-
- You can also move the PowerVisor window with :
-
- < move main 10 10 <enter>
-
- You can also resize the PowerVisor window using the size gadget.
- The 'screen' command normally opens a window with the same size as the previous
- size. If this is too big for the new screen, PowerVisor will make the window
- as big as possible.
-
- When PowerVisor is on another screen, you cannot use the following commands :
-
- - color
- - mode with one of the following arguments :
- fancy,nofancy,pal,ntsc,vga,viking,lace,nolace
-
- If you are configuring PowerVisor in a special way you can also make the
- 'Main' physical window a non-backdrop window on the PowerVisor screen :
-
- < screen 0 <enter>
-
- Now you can size and move the PowerVisor window.
-
- Go back to the PowerVisor intuition screen :
-
- < screen <enter>
-
- Note that the 'screen' commands moves all physical windows (see later)
- present.
-
- ====================== The PowerVisor window system ==========================
-
- The PowerVisor window system is fairly complex. At the hart of the system
- you have the ²²physical windows. These correspond directly with
- ²Intuition windows. Normally there is only one physical window called 'Main'.
- This window also contains the ¹stringgadget. You can open more physical
- windows if you want (see later).
-
- Each physical window has a ³tree of boxes. A ¹¹box is some space that can
- later be used by ²logical windows. By default there is only one box on
- a physical window. This box is called the ¹masterbox and is always present
- (you can't remove this box). When you open more logical windows on a physical
- windows the appropriate boxes are made automatically, so you generally need
- not concern yourselves with these objects.
-
- A box is not always used by a logical window. Sometimes it is used by two
- other boxes. For example: if you want three logical windows, two above
- each other and the third one right of the previous two. You now seem to
- have three boxes :
-
- +---------+-------+
- | | |
- | | |
- | 1 | |
- | | |
- | | |
- +---------+ 3 |
- | | |
- | | |
- | 2 | |
- | | |
- | | |
- +---------+-------+
-
- In this example there are three boxes containing a logical window. But there
- are in fact five boxes on the physical window.
- First the masterbox :
-
- +-----------------+
- | |
- | |
- | |
- | |
- | |
- | 4 |
- | |
- | |
- | |
- | |
- | |
- +-----------------+
-
- The masterbox contains two boxes :
-
- +---------+-------+
- | | |
- | | |
- | | |
- | | |
- | | |
- | 5 | 3 |
- | | |
- | | |
- | | |
- | | |
- | | |
- +---------+-------+
-
- Box 5 contains two other boxes and box 3 contains a logical window.
-
- It is easy to see the tree structure for the boxes. Box 4 is the masterbox
- and only the leaves of the tree contain logical windows.
-
- +---+
- | 4 |
- +---+
- / \
- / \
- / \
- +---+ +---+
- | 5 | | 3 |
- +---+ +---+
- / \
- / \
- / \
- +---+ +---+
- | 1 | | 2 |
- +---+ +---+
-
- All boxes containing two other boxes automatically draw a ²²size bar.
- By ¹dragging this size bar you can change the size of the two child
- boxes. For example, dragging the ³vertical size bar between box 5
- and box 3 (thus managed by box 4) changes the size of box 5,3,1 and 2.
- Dragging the ³horizontal size bar between box 1 and 2 (managed by
- box 5) only changes the size of box 1 and 2. Note that each parent
- box remembers the size for the two children with one number: this number
- is the percentage (x10) that child A may use of the parent box. This
- means that if you change the size of a box, all children are resized
- proportionally.
-
- When you add a logical window using the appropriate commands (see later),
- PowerVisor will add two boxes. For example, if you want to add a logical
- window below all boxes already visible, the tree will look as follows
- (box 6 and 7 are new) :
-
- +---+
- | 6 |
- +---+
- / \
- / \
- / \
- +---+ +---+
- | 7 | | 4 |
- +---+ +---+
- / \
- / \
- / \
- +---+ +---+
- | 5 | | 3 |
- +---+ +---+
- / \
- / \
- / \
- +---+ +---+
- | 1 | | 2 |
- +---+ +---+
-
- (Note that the masterbox has changed)
- The physical window changes to :
-
- +---------+-------+
- | | |
- | 1 | |
- | | |
- +---------+ 3 |
- | | |
- | 2 | |
- | | |
- +---------+-------+
- | |
- | 7 |
- | |
- +-----------------+
-
-
- A ²²logical window is the object you are probably going to use most. It can
- contain text. To know where the text must appear in the ²physical window,
- the logical window uses a ¹box. The standard logical window for output is
- the ³'Main' logical window. This logical window always resides on the
- ³'Main' physical window (but there can be more logical windows on the
- 'Main' physical window). There are six predefined logical windows :
-
- - Main for normal output
- - Extra for output
- - Refresh used by the 'refresh' command for output
- - Debug for the fullscreen debugger
- - Rexx if present, all output from a ¹rexx command goes to this
- logical window. Otherwise the output goes to the current
- logical window.
- - PPrint if present, all ¹PortPrint messages go to this logical window.
- Otherwise the output goes to the current logical window.
-
- You can add your own logical windows.
-
- All physical windows currently present can be found in the 'pwin' list.
- All logical window can be found in the 'lwin' list.
-
- ====================== The size of a logical window ==========================
-
- A logical window contains text. It has a certain ³number of rows and a
- certain ³number of columns. Normally this number is independent of the
- ²visible size of the logical window. What this means is that the number of
- columns and rows remains the same even if you switch to interlace or if
- you change the size of a logical window (by dragging the ²size bar).
- This is the reason that PowerVisor only uses half the screen when you
- switch from ¹non-interlaced to ¹interlaced. There are several solutions to
- this problem :
-
- - If you want the number of columns and rows automatically ¹fit for the
- visible size you can make the logical window ¹autoscalable. You can
- do this with the 'colrow' command (see later). The disadvantage of this
- is that the logical window will be cleared everytime the visible size
- changes. If you want you can also make the logical window autoscalable
- for the number of rows only, or for the number of columns only.
-
- - If interlace is your default screen type (defined with the 'mode' and
- the 'saveconfig' commands) the 'Main' logical window will be bigger.
- If you switch to non-interlace, the number of columns and rows will
- remain the same. This means that you can scroll in the logical window
- (see later).
-
- - You can explicitelly tell PowerVisor to fit the 'Main' logical window
- to the visible size with the 'fit' command (see later). This is not
- the same as the first method since the window will have a ²fixed size
- (not autoscalable).
-
- - You can explicitelly set the size of the 'Main' logical window using
- the 'colrow' command. If this size is too big for the visible size,
- you will be able to ¹scroll in the logical window.
-
- The first, second and fourth methods can be made permanent with the
- 'mode', 'prefs' and 'saveconfig' commands (see the 'Installing
- PowerVisor' chapter).
-
- Note that this discussion is also valid for other logical windows as well.
- All the standard logical windows behave a bit different (you can
- change this behaviour with the 'prefs' command) :
-
- - Main number of columns and rows is set to a fixed value. This value
- is the maximum number of columns and rows at the time the
- logical window is created.
- - Extra like 'Main'
- - Refresh the number of columns is set to a fixed value. This value is
- the maximum number of columns at the time the logical window
- is created. The number of rows is fixed and always set to
- 50.
- - Debug the number of columns is fixed and set to 82. The number of
- rows is fixed and set to 42.
- - Rexx Like 'Refresh'
- - PPrint Like 'Refresh'
-
- ================= Standard behaviour for logical windows =====================
-
- All logical windows can behave different. Here are the possible behaviours
- for logical windows :
-
- ¹-MORE- enabled or disabled
- When enabled, PowerVisor will pause when there is a full
- window of output.
- ¹Interrupt/Pause enabled or disabled
- When enabled you can use the <esc> and <right-alt>+<help>
- keys to interrupt or pause PowerVisor when PowerVisor is
- sending output to the logical window.
- ²Home position is top-visible or real-top
- PowerVisor maintains a home position for each logical window.
- This position is either the ²real top of the logical window
- or the first line that is visible (starting from above)
- of the bottom visible half of the logical window.
- When a ³top-visible logical window is cleared, PowerVisor will
- scroll to the bottom part of the logical window and set
- the current cursor position to the first line of this visible
- part.
- When a ³real-top logical window is cleared, PowerVisor will
- scroll to the top part of the logical window and set the
- current cursor position to the first line.
- There is yet another difference between top-visible and
- real-top logical windows. When the visible size of a logical
- window changes (this does not always imply a change of the
- number of rows and columns), PowerVisor will try to keep
- the top visible line (for real-top logical windows) or the
- bottom visible line (for top-visible logical windows) on the
- same visible position.
- ²Status line on/off
- The statusline is the bar at the top of a logical window.
- ³Auto Output Snap on/off
- When enabled, PowerVisor will automatically scroll the logical
- window to the position of the appearing output. This means
- that you will always see all new output on the logical window.
- When disabled, PowerVisor will not scroll and output may
- appear off screen. Note that this flag is only useful when
- the logical window is bigger than the current visible size.
-
- The standard logical windows have the following behaviour :
-
- - Main -MORE- enabled/disabled depending on the setting of
- the 'mode' command (see later)
- Interrupt/Pause enabled
- Home position is top-visible
- Status line on
- Auto Output Snap is on
- - Extra -MORE- disabled
- Interrupt/Pause enabled
- Home position is top-visible
- Status line on
- Auto Output Snap is on
- - Refresh -MORE- disabled
- Interrupt/Pause disabled
- Home position is real-top
- Status line on
- Auto Output Snap is off
- - Debug -MORE- disabled
- Interrupt/Pause disabled
- Home position is real-top
- Status line on
- Auto Output Snap is off
- - Rexx -MORE- disabled
- Interrupt/Pause disabled
- Home position is top-visible
- Status line on
- Auto Output Snap is off
- - PPrint -MORE- disabled
- Interrupt/Pause disabled
- Home position is top-visible
- Status line on
- Auto Output Snap is off
-
- All other logical windows have the following default behaviour :
-
- -MORE- disabled
- Interrupt/Pause enabled
- Home position is top-visible
- Status line on
- Auto Output Snap is off
-
- You can change the ²default behaviour for the standard logical windows
- with the 'prefs' command. You can change the behaviour for each logical
- window with the 'setflags' command (see later).
-
- ==================== Opening standard logical windows ========================
-
- There are predefined commands to open the ³standard logical windows :
-
- - xwin Extra
- - dwin Debug
- - rwin Refresh
- - awin Rexx
- - owin PPrint
-
- These commands open/close the specified logical window at the top. This means
- that they split the ¹masterbox and add a new box above all other logical
- windows. This box gets 30 % of the total physical window height. The logical
- windows in the remaining 70 % are shrinked accordingly. These predefined
- commands always open the window on the ³'Main' physical window.
-
- Some examples :
-
- < xwin <enter>
-
- Now we have two logical windows on our 'Main' physical window. These two
- logical windows are called 'Main' and 'Extra'. You can change the size
- of the windows by dragging the ²horizontal bar.
-
- You can now use this window instead of 'Main' for output :
-
- < current extra <enter>
-
- Type some command :
-
- < list task <enter>
- > Task node name : Node Pri StackPtr StackS Stat Command Acc
- > ----------------------------------------------------------------------------
- > Background Process : 07E28330 00 07E2D500 4096 Wait iprefs (02) -
- > PowerSnap 1.0 by Nic: 07E51228 05 07E51A72 2000 Wait PROC -
- > Background Process : 07E5B3E8 00 07E5AD92 4096 Wait addtools (06) -
- > SYS:System/CLI : 07E5CAA8 00 07E5D9E6 4096 Wait (00) -
- > * Blanker : 07E605D8 00 07E615E4 4000 Wait PROC -
- > RexxMaster : 07E4AD58 04 07E4B59A 2048 Wait (00) -
- > ...
-
- The output appears on 'Extra'.
-
- < current main <enter>
-
- Now all following output will appear on 'Main'.
-
- You can also use the 'on' command :
-
- < on extra list task <enter>
- > Task node name : Node Pri StackPtr StackS Stat Command Acc
- > ----------------------------------------------------------------------------
- > Background Process : 07E28330 00 07E2D500 4096 Wait iprefs (02) -
- > PowerSnap 1.0 by Nic: 07E51228 05 07E51A72 2000 Wait PROC -
- > Background Process : 07E5B3E8 00 07E5AD92 4096 Wait addtools (06) -
- > SYS:System/CLI : 07E5CAA8 00 07E5D9E6 4096 Wait (00) -
- > * Blanker : 07E605D8 00 07E615E4 4000 Wait PROC -
- > RexxMaster : 07E4AD58 04 07E4B59A 2048 Wait (00) -
- > ...
-
- This command temporarily sets the current logical window to the parameter
- supplied. It then executes the following command ('list task' in this
- example).
-
- To see all logical windows you can list them :
-
- < list lwin <enter>
- > Logical Window : Node
- > ---------------------------------------------------------------------------
- > Extra : 07EBCB20
- > Main : 07E25A60
-
- Close 'Extra' with :
-
- < xwin <enter>
-
- =================== Opening logical windows in general =======================
-
- Instead of using the predefined commands to open the standard logical windows
- you can also use the more powerful 'openlw' and 'closelw' commands. These
- commands can also be used to open other logical windows.
-
- Some examples :
-
- To open the 'Extra' logical window right from the 'Main' logical window
- (instead of above the 'Main' logical window) you can use :
-
- < openlw main extra 80 40 main r <enter>
-
- The first argument is the ²physical window where we want to open the new
- ²logical window. The second argument is the name of the logical window.
- The two following arguments are the number of columns and rows. If you
- want an ³autoscale logical window you can use -1 for one or both of
- these arguments. The two last arguments specify where you want to open
- the 'Extra' logical window. In this case we opened it at the right ('r')
- of the 'Main' logical window.
-
- Do not close this logical window yet. We will first open a third :
-
- < openlw main testwindow 100 -1 extra u <enter>
-
- This window is autoscalable for the height. This means that when you change
- the horizontal visible size nothing will happen, but if you change the
- visible vertical size the window will be cleared and the number of columns
- will change.
- Now we have three logical windows on the 'Main' physical window.
-
- Suppose we wanted to open a logical window at the bottom of the physical
- window. This can be done with :
-
- < openlw main bottomwindow 80 40 main pd <enter>
-
- The 'pd' argument means that we first take the parent and then go down.
- You will probably understand how this works when you think how PowerVisor
- manages ²logical windows and ¹boxes. When you said something like 'extra u'
- some commands ago, PowerVisor interpreted this as : take the box containing
- the 'extra' logical window. Split this box (make a new parent instead of
- the old box and make the existing 'extra' box a child of this new parent,
- also create a new box as the brother of the 'extra' box) and put the new
- logical window above the 'extra' logical window. When you say something like
- 'main pd' in the previous command, PowerVisor interpretes this as : take
- the box containing the 'main' logical window. Take the parent of this box
- (the 'p' stands for parent) and perform the same action as described before
- on this parent box.
-
- You can use as many p's in front of the direction argument as you wish.
- You can use u (up), d (down), r (right) or l (left) for direction
- arguments.
-
- To close all logical windows use :
-
- < closelw extra <enter>
- or
- < xwin <enter>
-
- < closelw testwindow <enter>
- < closelw bottomwindow <enter>
-
- Now we are back with only one logical window: 'Main'.
-
- ======================== Opening physical windows ============================
-
- You are not limited to the default physical window 'Main'. You can open
- five additional ²physical windows (This limitation stems from the fact that
- PowerVisor only has 5 remaining signals. In a later release of PowerVisor
- this limitation will probably be removed). These physical windows can contain
- as many logical windows as memory permits.
-
- For example, open a physical windows and two logical windows in it :
-
- < openpw test 0 0 400 150 <enter>
-
- You now have an extra window on position (0,0), width 400 and height 150.
-
- < openlw test leftwin 80 40 <enter>
-
- Note that for the first logical window on a physical window you need not
- give positional arguments.
-
- < openlw test rightwin 80 40 leftwin r <enter>
-
- Some tests :
-
- < on leftwin list wins <enter>
- > ...
-
- < on rightwin list scrs <enter>
- > ...
-
- You need not close the logical windows. If you close the physical window
- the logical windows are closed automatically :
-
- < closepw test <enter>
-
- ====================== Scrolling in logical windows ==========================
-
- As was mentioned before, the number of columns and rows in a logical window
- can be greater than the visible number of columns and rows. If this is
- the case you can ¹¹scroll in the logical window.
-
- The window that will scroll when you use the appropriate ¹keys (see below)
- is the one that is active. The ³active logical window has a full (blue for
- two bitplanes or black for one bitplane) ²size bar.
- All the other logical windows have an ³empty size bar.
-
- The following keys are defined (numeric keypad) :
-
- - <l-alt>+<home> (7) go to the top left position in the logical window
- - <l-alt>+<end> (1) go to the bottom left position
- - <l-alt>+<pgup> (9) scroll 5 lines up
- - <l-alt>+<pgdn> (3) scroll 5 lines down
- - <l-alt>+<arrows> (2,4,6,8)
- scroll one line/column in the right direction
- - <l-alt>+<cntr> (5) go to the complete right
- - <tab> make the next logical window active
-
- You can also set the active logical window using the 'active' command.
- Note that the ³active logical window is NOT the same as the current
- logical window. The active logical window is ONLY useful for scrolling with
- the keyboard. The ³current logical window is the window that will receive
- all output.
-
- To let you experiment with all keys try the following :
-
- < colrow main 100 80 <enter>
-
- This command sets the number of columns and rows to 100 and 80
- resp. Now put some output on the screen (with 'memory' or 'list')
- and scroll in all directions.
-
- Note that the little box in the statusline changes when you scroll.
- This box is an indicator of where you are in the logical window. If you
- can't scroll (because the number of columns and rows is less or equal than
- the number of columns and rows visible) the box will be full. Otherwise
- it represents the position of the visible size of the logical window.
-
- ============================ Setting the Font ================================
-
- You can install a different ²non-proportional font for each logical window.
- The ²default font is always ²'topaz 8'.
-
- Open the 'Debug' window :
-
- < dwin <enter>
-
- (Ignore the 'task not loaded' message, you will need this later when you
- start debugging).
-
- < setfont debug topaz.font 9 <enter>
-
- You will see that the size of the letters change.
- The fonts you want to use must be either memory resident or available in
- the 'fonts:' directory.
-
- < setfont main courier.font 13 <enter>
-
- (You must have a non-proportional courier.font in your 'fonts:' directory to
- do this).
-
- To restore everything type :
-
- < dwin <enter>
- < setfont main topaz.font 8 <enter>
-
- ============================ The Snap Feature ================================
-
- (Also see the 'Snapping Away' section of the 'GettingStarted' tutorial file).
-
- If you click anywhere on the PowerVisor window (except on size bars),
- PowerVisor will ¹'snap' the word under the mousepointer to
- the commandline. If there is no word under the mousepointer nothing
- happens.
-
- This feature works on all logical windows regardless of their size, font,
- number of columns, ...
-
- Note that the snap will not happen if the window is just made active.
- You must click twice if the window is not active and you want to snap
- something.
-
- The 'snapping' feature can behave in different ways. You can use the
- 'mode' command to set the behaviour you like most.
-
- ================================= Refresh ====================================
-
- The 'Refresh' logical window is used together with the 'refresh' command.
-
- Open the 'Refresh' window and make the window big enough :
-
- < rwin <enter>
-
- Start the refresh of the current list :
-
- < refresh 10 {home;list} <enter>
-
- (See the 'Expressions' tutorial file for more info about the grouping
- operator '{}').
-
- This 'refresh' command will execute 'home' and 'list' one time
- each second and send the output to the 'Refresh' logical window.
- Using the 'tab' key and the numeric keypad keys (with left-alt) you
- can now scroll in this refresh display.
-
- To disable the refresh use :
-
- < refresh 0 <enter>
-
- and close 'Refresh' with :
-
- < rwin <enter>
-
- =============================== Redirection ==================================
-
- If you want to ³redirect all output of a logical window to a file you can
- use :
-
- < log main file <enter>
-
- Now all output that appears on 'Main' is also sent to the file 'file'.
-
- You can stop the redirection with :
-
- < log <enter>
-
- or 'log' with another logical window, since there can only be one log
- file active at the same time.
-
- If you are ²logging output to a file it can be useful to have no output on
- the PowerVisor screen. You can accomplish this with :
-
- < -list <enter>
-
- When you precede a line with '-', PowerVisor will send the output from the
- following command to void. Except when you have logging enabled.
-
- If you want to temporarily discard the ¹feedback (the reprint of the
- executed command on the screen) you can type :
-
- < ~list <enter>
- > ...
-
- This '~' operator is very useful if you want to ³attach a command to a key.
- If you precede the command in this attachment with a '~', PowerVisor will
- execute the command without showing it on the screen.
-
- You can also disable this feedback for all commands you type with :
- < mode nofb <enter>
-
- To enable it type (this is default) :
- < mode fb <enter>
-
- If you want to combine these two operators you must use the following order
- (See the 'TechnicalInfo' file for more information about commandline
- parsing) :
-
- < ~-list <enter>
-
- If you only want the output from one command in a file you can use the
- 'to' command :
-
- < to ram:MyOutputFile list task <enter>
- > ...
-
- The output will still appear on the current logical window. This command
- temporarily works like the 'log' command. The real log file is restored
- after this command exits.
- If you only want output in a file you can use :
-
- < -to ram:MyOutputFile list task <enter>
-
- or
-
- < to ram:MyOutputFile -list task <enter>
-
- You can also combine the 'to' and the 'on' command :
-
- First open the 'Extra' window (if it is not already open) :
- < xwin <enter>
-
- < to ram:MyOutputFile on extra list task <enter>
- > ...
-
- This command will list all tasks on the 'Extra' logical window. No output
- will be written to the file since the 'to' command only redirects the output
- from the ³current logical window. However :
-
- < on extra to ram:MyOutputFile list task <enter>
- > ...
-
- will also list all task on the extra window. The difference is that this
- time there will be output in the file since the 'to' command redirects
- the output from the current logical window. At the time the 'to' command
- is executed, this logical window is equal to 'Extra'.
-
- ================================== Pens ======================================
-
- You can change the color pens used for various drawing elements with the
- 'prefs pens' command. See the 'InstallingPowerVisor' tutor file for
- more information.
-
- ================================ More ... ====================================
-
- If the output of a specific command is too big, PowerVisor will wait and
- display a ¹prompt. Try this :
-
- Make the number of columns and rows for 'Main' just big enough :
-
- < fit main <enter>
-
- List a lot of memory :
-
- < memory 0 10000 <enter>
- > 00000000: 00000000 07E007CC 00F80834 00F80B16 ...........4....
- > 00000010: 00F80ADA 00F80ADC 00F80ADE 00F80AE0 ................
- > 00000020: 00F80C00 00F80AE4 00F80AE7 00F80AE8 ................
- > 00000030: 00F80AEA 00F80AEC 00F80AEE 00F80AF0 ................
- > 00000040: 00F80AF2 00F80AF4 00F80AF6 00F80AF8 ................
- > 00000050: 00F80AFA 00F80AFC 00F80AFE 00F80B00 ................
- > 00000060: 00F80B02 00F810F4 00F81152 00F81188 ...........R....
- > 00000070: 00F811E6 00F8127C 00F812C6 00F81310 .......|........
- > 00000080: 00F80B70 00F80B72 00F80B74 00F80B76 ...p...r...t...v
- > 00000090: 00F80B78 00F80B7A 00F80B7C 00F80B7E ...x...z...|...~
- > 000000A0: 00F80B80 00F80B82 00F80B84 00F80B86 ................
- > ...
-
- After each page of output PowerVisor will display a prompt. Press any key
- to ³continue the output. Press ¹<esc> ³abort the output.
-
- < <esc>
- > Break...
-
- Note that PowerVisor will display this prompt after each page. A ¹page is
- defined as the number of lines in the logical window. All these lines
- do not have to be visible. For example, if the 'Main' logical window
- is bigger than the visible size on screen, PowerVisor will only display
- a prompt after the TOTAL number of lines has passed. You can always
- scroll back to view the rest of the output if you want.
-
- You can disable this prompt with :
-
- < mode nomore <enter>
-
- And enable it with :
-
- < mode more <enter>
-
- The 'Main' logical window is the only window with a ²'-MORE-' prompt. All
- the other logical windows simply scroll until you interrupt them in one
- way or another. (Note that you can change this behaviour if you want to
- with the 'prefs' command (see the 'InstallingPowerVisor' file)).
-