Copyright: Copyright ®1993 AIM-Software
Citation: Copyright ®1993 AIM-Software


Contents
How to use AIM-Postprocessor

What is AIM-Postprocessor

Conventions Used in the Documentation

The Aim-Postprocessor Toolbar

Opening an AIM-Spice Data File

Select Current Plot

Creating Graphical Plots

Trace Expression Editing (TEE)

Graph Editing

Formatting Axes

Formatting Axis Titles

Formatting Labels

Formatting The Trace Area

Adding and Formatting Text

Formatting Legends

Changing the X-Axis Expression

Cursors

Printing

Command Reference

The command reference describes commands and dialog boxes in AIM-Postprocessor.

Most of the menu commands can be selected with shortcut key combinations. These key combinations, if they exist, are indicated next to the command name. Also, some of the commands can be chosen by clicking on the corresponding toolbar button. If a toolbar button exists for a certain command, it is shown next to the command name.

File menu commands

Edit menu commands

Graph menu commands

Format menu commands

View menu commands

Window menu commands

Help menu commands


What is AIM-Postprocessor

The AIM-Postprocessor is an application containing routines for further processing of data obtained from the various analyses in AIM-Spice, and for graphical presentation. It works independently of the analysis part of AIM-Spice, but still within the Windows environment.

Although AIM-Spice has facilities to plot circuit variables graphically, AIM-Postprocessor has a much more powerful plotting engine including the following features:

Plotting of sums and differences, derivatives, integrals, and mathematical functions of circuit variables.

FFT (Fast Fourier Transform).

Sophisticated graphical formatting capabilities.

Cursors to select numerical values and to calculate differences between variables.

Import of experimental data.

Hardcopies.


Conventions Used in the Documentation

Before you start using this user guide, it's important to understand the terms and notational conventions used in the guide.

The word "choose" is used for carrying out a menu command or a command button in a dialog box.

The word "select" is used for highlighting text, legends or other objects in a graph that you want your next action to affect, and for selecting a specific dialog option.

Commands you choose are given with the menu name preceding the command name. For example, the phrase "Choose Graph Add Plot" tells you to choose the Add Plot command from the Graph menu.

The phrase "Choose OK" means that you either can click the OK button with the mouse or press the ENTER key on the keyboard to carry out the action you want.

Underlined text in the tutorial chapter is actions you are encouraged to complete.


The AIM-Postprocessor Toolbar

AIM-Postprocessor displays a toolbar right below the menu that gives you instant access to the most frequently used commands. If you are running the Windows 95/NT version of AIM-Postprocessor, tool tips are shown whenever you move the cursor over one of the buttons in the toolbar. The tool tip explain which command each button performs if it is clicked.  Unfortunately, the Windows 3.1 version of AIM-Postprocessor does not have this nice tool tip feature. Therefore, in the figure below the toolbar button commands are shown.


Opening an AIM-Spice Data File

An AIM-Spice data file contains one or more plots. A plot consists of three main parts: plot information, a list of output variables, and a list of data vectors.

To open an AIM-Spice data file, follow these steps:

Choose File Open or click the following toolbar button:

A standard File Open dialog box is displayed. The default extension for data files is OUT. The list box to the left contains a list of files in the current directory with extension OUT.

Select the file you want to open and choose OK. AIM-Postprocessor opens and reads the contents of the file.

Every plot that contains only one data vector is displayed in a table or a graph immediately after the file is loaded. Plots from the Operating Point Analysis, the Transfer Function Analysis,  the Pole-Zero Analysis and the Noise Analysis are such one-vector plots.


Select Current Plot

After the file is read, a dialog box appears containing a list of all plots saved in the file (this dialog box is not displayed if the file contains only one plot). This dialog box is shown below.

You are asked to select one plot as the current plot. To select the current plot, select the corresponding list box item and then choose OK.

You can change the current plot at any time by choosing the File Change Current Plot command or clicking the following toolbar button:

After a plot has been selected, and provided this is not a one-vector plot, you are able to create line graphs of the variables contained in the plot. If you select a one-vector plot as the current plot, the graph or table window with the plot is made the active window. If the window does not exist, AIM-Postprocessor creates a new window and displays the plot.

The information part of a plot can be viewed at any time by choosing the View Plot Info command. This command displays information about the current plot in the two dialog boxes shown below.


Creating Graphical Plots

A graphical plot is a document window that contains a graph with one or more traces.

You create graphical plots by choosing the Graph Add Plot command. When you choose this command the Add Plot dialog box shown below is displayed.

The Add Plot dialog box is divided into four main fields:

A list box with the variables in the current plot.

A list box with the traces you want to add to the graphical plot. This list box is initially empty.

A Trace Expression Editor (TEE) that lets you edit the traces you want.

Three command buttons.

You can also create a plot by clicking the following toolbar button:

Trace Expression Editing (TEE)

Trace expression editing gives you the ability to create complex expressions including mathematical functions, derivatives and integrals of the variables in a plot. These expressions are plotted graphically when you choose the New Plot or Overlay Plot command.

TEE works much like a calculator. With a calculator, you add operands, operators, and functions of operands, and then you press '=' to calculate your expression. In the TEE the '=' symbol is replaced by the command Add Expression that saves the expression you have edited in the list of traces. The trace editor, like a calculator, also has a display window that shows the current expression. With a backspace key you can delete the last operation in the trace editor. The editor is intelligent in the sence that it ignores operations that are not allowed. For example, every expression starts with an operand or a function, and accordingly, the editor doesn't allow you to start with an operator. Operator buttons are inactive when operators are not allowed, the list of variables is grayed when operands are not allowed, and so on.

Here are three example expressions based on our example circuit, and the recipe for creating and saving them in the trace editor:

i)	V(3)

ii)	V(3)+V(5)

iii)	The average value of V(3)

Follow these steps to create the three traces:

Open the Add Plot dialog box

Select the variable V(3) from the list of circuit variables

The variable V(3) appears in the TEE display

Choose the command button Add Expression

The trace is added in the trace list and the TEE display is cleared and is ready to receive a new expression

Select the variable V(3) from the list of circuit variables

The variable V(3) appears in the TEE display

Choose the operator '+' from the operator buttons

The plus-operator appears in the TEE display

Select the variable V(5) from the list of circuit variables

The variable V(5) appears in the TEE display

Choose the command button Add Expression

The trace is added in the trace list and the TEE display is cleared and is ready to receive a new expression

Choose the function button labelled "avg"

The text "avg(" appears on the TEE display. Averages are always taken over the  x-axis variables which in this case is the time (default x-axis variable in Transient Analysis).

Select the variable V(3) from the list of circuit variables

You have now added the argument of the function and the TEE display contains "avg(V(3)"

Choose the closing parenthesis button

You have now added the closing parenthesis of the average function

Choose the command button Add Expression

The trace is added in the trace list and the TEE display is cleared and is ready to receive a new expression

This completes our examples and the trace list now contains three traces.

Choose the command button New Plot

A new graph window is created and a graph with the three traces is displayed. Note that the Overlay Plot command was grayed in the dialog box. This command is available only when you have already created one or more graphs. You use it when you want to add new traces to an already existing graph.

On the screen traces can be distinguished by different colors, symbols or line styles. It is also possible to drag the legends close to the different traces, which is especially useful when creating hard copies.


Graph Editing

A graph consists of two axes, two axis labels, two axis titles, the trace area, text and legends to identify the traces. The figure below illustrates the different parts of a graph. It is possible to change the appearance of all these parts with the graph editing facilities in AIM-Postprocessor.

Note that legends are linked to the graph and are moved whenever the trace area is moved or resized. This link is broken when you move or resize one of the legends (the link is broken only for the legend moved or resized).

The graph edit facilities are:

Formatting axes

Formatting labels

Formatting axis titles

Formatting the trace area

Adding and formatting text

Formatting legends

Changing x-axis expression

Formatting Axes

To format an axis first select a graph window as the active document window. Then choose the appropriate command from the Format menu. Note that it is also possible to format an axis by double clicking the axis. If you choose to format the x-axis of a graph, a dialog box as shown below appears.

This dialog box has the following fields:

Axis Type	Choose between linear or logarithmic axis
Base	If you choose a logarithmic axis, you can select the base number to be 8 or 10
Minimum	Specifies the minimum value for the axis
Maximum	Specifies the maximum value for the axis
Increment	Specifies the distance between axis labels
Minor tics	Specifies number of tic marks drawn between labels
Grid Lines	You can specify line styles for grid lines drawn on major tic marks and on grid lines drawn on minor tic marks. The check box Display Grid turns the grid on or off
A faster way of changing the axis limits is to zoom with the mouse using the following the steps:

Turn zooming on by choosing the View Zoom command.

Position the mouse cursor where you want the upper left corner of your view area to be. Press and hold the right mouse button.

Drag the mouse cursor down to the lower right corner of your view area and release the button.

The graph is then redrawn with the new axis limits.

When you turn the zooming off by choosing the View Zoom command, you reset the axis limits to their values before the zoom operation.

Formatting Axis Titles

To format an axis title, first select a graph window as the active document window. Then choose the appropriate command from the Format menu. Note that it is also possible to format an axis title by double clicking the title. If you choose to format the x-axis title of a graph, a dialog box as the one shown below is displayed.

This dialog box has the fields shown below:

Axis Title	Contains the current axis title.
Fonts	Contains a list off all fonts available in the printer currently selected. The font currently used for the text is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for the text is displayed in the edit box. To use another point size, type a new point size in the edit field or open the list of point sizes by clicking on the down arrow in the drop down list box, and then select a point size from the list.
Style	Specifies the style used for the text. You can specify bold, italic and/or underlined text.
Show Title	Specifies if the title is displayed or not.
Formatting Labels

To format a label, first select a graph window as the active document window. Then choose the appropriate command from the Format menu. Note that it is also possible to format a label by double clicking the label. If you choose to format the x-axis label of a graph, a dialog box as the one shown below appears.

This dialog box has the fields shown below:

Fonts	Contains a list off all fonts available in the printer currently selected. The font currently used for the label is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for label text is displayed in the edit box. To use another point size for label text, type a new point size in the edit field or open the list of point sizes by clicking on the down arrow in the drop down list box, and then select a point size from the list.
Style	Specifies the text style used for the label. You can specify bold, italic and/or underlined text.
Notation	Specifies the numeric format used in the label. The number 1 million is displayed as 1M if you specify AIM-Spice scale factors, 1000000 if you specify Decimal and 1E+006 if you specify Scientific. The Digits text box lets you specify how many digits to use in the numeric format.
Formatting The Trace Area

It is possible to move and resize the borders of the rectangular trace area. To move the rectangle, click and hold the left mouse button anywhere inside it. Then drag the rectangle to the new position and release the mouse button. To resize the rectangle, click the left mouse button anywhere inside it. This operation selects the rectangle. Then place the mouse cursor over one of the handles and click and hold the left mouse button. Then drag the rectangle borders to their new positions and release the mouse button. The handle selected determines which rectangle border to move.

Double clicking anywhere inside the trace area restores the trace area to the default position and size. Legends, x-axis title, x-axis unit and y-axis unit are also restored to their default positions and links to the trace area are made active again.

Adding and Formatting Text

To add text to your graph, choose the Graph Add Text command. Now when you place the cursor over a graph window, the cursor will change to reflect that you have selected to add text. Position the cursor on the location where you want the upper left corner of your text to be located and then click the left mouse button. The dialog box shown below appears.

The dialog box has the following fields:

Fonts	Contains a list off all fonts available on the printer currently selected. The font currently used for the text is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for the text is displayed in the edit box. To use another point size for the text, type a new point size in the edit field or open the list of point sizes by clicking on the down arrow in the drop down list box, and then select a point size from the list.
Style	Specifies the style used for the text, bold italic and/or underlined.
Justification	Specifies the horizontal justification of the text within the text rectangle.
Orientation	Specifies the orientation of the text.
Border	If selected, a rectangle is drawn around the text.
Text	Here you type the text you want to add to the graph.
Complete the dialog box and choose OK to add the text with the format you have selected.  It is possible to cancel the Add Text command by choosing the command once more before you click the mouse button.

You can format a text at any time by double clicking within the text area with the left mouse button to select the text. In response, the Text Format dialog box is displayed. You are now able to make changes in the selected text. To make your changes visible, choose OK.

It is also possible to move and resize text. To move a text, click and hold the left mouse button anywhere in the text area. Then drag the text to the new position and release the mouse button. To resize a text, click the left mouse button anywhere in the text area. Then place the mouse cursor over one of the handles and click and hold the left mouse button. Then drag the rectangle borders to their new positions and release the mouse button.

You can also add text by clicking the following toolbar button:

Formatting Legends

Legends are used to identify the different traces contained in a graph.

The legends are positioned at the upper left corner of the trace area with a symbol identifying the trace by color. You can move and resize the legend, and change its format. To move or resize the legend follow the procedure described above for moving or resizing text.

To format a legend, point the cursor to it and double click. The dialog box below is displayed.

The dialog box has the following fields:

Legend Text	Specifies the legend text.
Fonts	Contains a list off all fonts available on the printer currently selected. The font currently used for the legend is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for the legend text is displayed in the edit box. To use another point size for the legend text, type a new point size in the edit field or open the list of point sizes by clicking on the down arrow in the drop down list box, and select a point size from the list.
Style	Specifies the text style used for the legend, bold italic and/or underlined.
Symbols	Contains a list of predefined symbols used to identify traces and data points generated by AIM-Spice.
Display Symbol with Text	If selected, the currently selected symbol is drawn to the left of the legend text.
Display Symbols in Graph	If selected, the currently selected symbol is drawn on data points.
Symbol Period	Active only if Display Symbols in Graph is selected. The number you type in this field specifies the symbol frequency. If you specify 1, a symbol is drawn for every data point. If you specify 10, a symbol is drawn for every tenth data point.
Symbol size	Determines the size of the symbol. The lowest value you can specify is 1.
Colors	Contains a list of predefined colors used to identify the traces. The color you select is used when drawing the trace and the currently selected symbol.
Line Styles	Contains a list of different line styles. AIM-Postprocessor uses the line style you have selected when it draws lines between data points to create a line graph.
Line Weight	Contains a list of different line weights. AIM-Postprocessor uses the line weight you have selected when it draws lines between data points to create a line graph.
Border	If selected, a rectangle is drawn around the legend.
When you use the screen as the output device, the use of different colors is the best way to identify the different traces in a graph. However, when you want to print a graph, you will normally not use colors. One way of identifying the different traces without using colors is to drag the legend into the trace area and position it close to the trace. When you do so and you do not want to show the symbol next to the legend text, you turn the option Display Symbol with Legend Text off.


Changing the X-Axis Expression

You do not have to use the x-axis variable from the simulation. You are free to change the x-axis to a general expression like the ones we described in the section Creating Graphical Plots. To change the expression for the x-axis, choose the Graph X-Axis Expression command and the dialog box below appears.

This dialog box is almost identical to the Add Plot dialog box. The only difference is that you now edit only one expression.  See Trace Expression Editing (TEE) for expression editing.


Cursors

Cursors are tools for extracting numerical values from your graphs. With two cursors, you are given the opportunity to calculate differences between traces. To turn cursors on, choose the View Show Cursors command. The cursor information window appears in the upper right corner of the main window.

To move the cursors around, click the left mouse button or use the arrow keys.

Select the View Hide Cursors command to hide the cursors.

You can also turn cursors on and off by clicking on the following toolbar button:


Printing

To print a graph or a table, follow these steps:

Format the graph or table you want to print.

Activate the corresponding document window (if not already done).

Choose File Print or the following toolbar button:

If you want to change the printer settings before you print, choose the File Printer Setup command.  The command lets you, for example, choose a different printer, change the orientation of the page, or the page size as shown in the dialog box below.


File menu commands

Open  (Ctrl+F12)

This command lets you specify which AIM-Spice data file to open. See Opening an AIM-Spice Data File.

Select Current Plot  (Ctrl+S)

See Select Current Plot.

Print

Prints the active graph or table window.

Printer Setup

Lets you specify printer and printer parameters.  See Printing.

Load Experimental Data  (Ctrl+O)

Loads a text file with experimental data. Displays a standard File Open dialog box to let you specify the file that contains the experimental data. The data are presented in the active graph window as centered symbols. The text file has the following format:

Number of data rows (nrows)

Number of data columns (ncol)

Legend text for column #1

Legend text for column #2

.

.

.

Legend text for column #ncol

[Experimental data formatted in nrows and ncol with one or more spaces between columns]

Note that the number ncol is the actual number of columns with y-values. The first column of values is taken as x-values and is not included. In the example file below, the value of ncol is 3 even though the actual number of columns is four.

An example file is shown here:

21

3

V(3)

V(5)

V(1)

0.000E+00   4.622E+00   2.665E-01   0.000E+00

1.000E-08   3.463E+00   2.674E-01   5.000E+00

2.000E-08   8.559E-01   2.879E-01   5.000E+00

3.000E-08   2.847E-01   5.395E-01   5.000E+00

4.000E-08   2.715E-01   1.277E+00   5.000E+00

5.000E-08   2.679E-01   2.085E+00   5.000E+00

6.000E-08   2.667E-01   2.866E+00   5.000E+00

7.000E-08   2.662E-01   3.576E+00   5.000E+00

8.000E-08   2.660E-01   4.185E+00   5.000E+00

9.000E-08   2.852E-01   4.671E+00   0.000E+00

1.000E-07   6.477E-01   4.922E+00   0.000E+00

1.100E-07   1.558E+00   4.729E+00   0.000E+00

1.200E-07   2.522E+00   3.773E+00   0.000E+00

1.300E-07   3.419E+00   2.318E+00   0.000E+00

1.400E-07   4.172E+00   8.201E-01   0.000E+00

1.500E-07   4.572E+00   2.887E-01   0.000E+00

1.600E-07   4.606E+00   2.728E-01   0.000E+00

1.700E-07   4.612E+00   2.686E-01   0.000E+00

1.800E-07   4.616E+00   2.673E-01   0.000E+00

1.900E-07   4.618E+00   2.668E-01   0.000E+00

2.000E-07   4.620E+00   2.666E-01   0.000E+00

After the file is read, the data is displayed in the active graph window.

Export  (Ctrl+P)

Lets you export data from an AIM-Spice data file or from the active window to a text file. If the active window is a graph window, the dialog box below is shown. If you want to export from the currently loaded AIM-Spice data file, select the button labelled  From raw data.  The other option From active window, lets you pick data from the currently active graph window to save to a text file.

If you select to export from the currently loaded AIM-Spice data file, the dialog box below appears. The list contains all the variables in the current plot. Select the variables you want to export and choose OK. A save as dialog box is displayed that lets you specify a filename to export to.

If you select to export from the active graph window, the dialog box below appears. The list contains all the traces in the active window. Select the traces you want to export and choose OK. A save as dialog box is displayed that lets you specify a filename to export to.

Exit  (Alt+F4)

Terminates AIM-Postprocessor.


Edit menu commands

Copy Graph  (Ctrl+C)

This command copies the graph in the active windows to the clipboard.

Delete Text  (Del)

Deletes the selected text. This command can also be invoked with the accelerator key Del.


Graph menu commands

Add Plot  (Ctrl+A)

Lets you create graphs. The command is described in detail in Creating Graphical Plots.

Add FFT Plot  (Ctrl+F)

This command lets you create FFT (Fast Fourier Transform) graphs from the graph that was active when you chose the command. The command is useful for examining the spectrum of the output on non-linear circuits. The dialog box below is displayed in response of this command.

The drop down list box contains a list of all traces contained in the active graph. One of the traces is selected (V(2) is selected in the dialog box above). The other two fields in the dialog box display the number of data points in V(2) and the suggested number of samples to use when transforming V(2). AIM-Postprocessor transforms each trace individually and creates two new graphs for each trace. One contains the amplitude of the original trace as a function of frequency, and the other contains the phase.

When AIM-Postprocessor transforms a trace it creates a new set of data points where the number of points is equal to the number of samples specified in the dialog box. The data points are equally spaced in the time interval. This is done using linear interpolation on the original set of data points. The new set of data points is then transformed.

The resolution in frequency is the reciprocal of extent in time, and extent in frequency is proportional to the number of samples used. So, if you want higher resolution in the frequency domain, you have to run the transient analysis for a longer time in AIM-Spice. Run the circuit for many cycles if necessary.

Note that AIM-Postprocessor can transform all kinds of traces, not only those that are functions of time. It's your responsibility to create meaningful transforms.

X-Axis Expression  (Ctrl+E)

This command lets you change the x-axis expression. A dialog box similar to the Add Plot dialog box is displayed. See Changing the X-Axis Expression.

Add Text  (Ctrl+T)

This command lets you add text to your graphs. See Adding and Formatting Text.


Format menu commands

X-Axis  (Ctrl+X)

Lets you change the x-axis format of the graph in the active graph window. See also Formatting Axes.

Y-Axis  (Ctrl+Y)

Lets you change the y-axis format of the graph in the active graph window. See also Formatting Axes.

X-Label  (Alt+X)

Lets you change the label format for the x-axis of the graph in the active graph window. See also Formatting Labels.

Y-Label  (Alt+Y)

Lets you change the label format for the y-axis of the graph in the active graph window. See also Formatting Labels.

X-Title (Alt+Shift+X)

Lets you format the x-axis title.  See also Formatting Axis Titles.

Y-Title (Alt+Shift+Y)

Lets you format the y-axis title.  See also Formatting Axis Titles.

Table  (Alt+T)

Lets you change the format of the table in the active table window. This command displays the dialog box shown below.

The dialog box has the following fields:

Fonts	Contains a list off all fonts available in the printer currently selected. The font currently used for the table cells is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for the table cells is displayed in the edit box. To use another point size for the table cells, type a new point size in the edit box or open the list of point sizes by clicking on the down arrow in the drop down list box, and then select a point size from the list.
Style	Specifies the text style used for table cells: bold, italic and/or underlined.
Justification	Specifies the horizontal justification of the cell text within the cell.
Borders	You can specify four types of border styles for different parts of the table: None, ingle, Double and Thick.

Table Header  (Alt+E)

Lets you change the table header format of the table in the active table window. This command displays the dialog box shown below.

A table has three headers, one for each type of justification. AIM-Postprocessor uses the Center Header as default when creating tables. You can also choose to use headers with left or right justification. With one header selected, the dialog box has the following fields:

Fonts	Contains a list off all fonts available in the printer currently selected. The font currently used for the table header is displayed in the edit box. To select another font, type the name of the font in the edit box or open the list of fonts by clicking on the down arrow in the drop down list box,  and then select a font from the list.
Points	Contains a list of point sizes. The point size currently used for the table header is displayed in the edit box. To use another point size for the table header, type a new point size in the edit box or open the list of point sizes by clicking on the down arrow in the drop down list box, and then select a point size from the list.
Style	Specifies the text style used for the table header: bold, italic and/or underlined.
Main Header Text	This edit field contains the text displayed as the first line of the header.
Sub Header Text	This edit field contains the text displayed as the second line of the header.

Preferences

Lets you change preference values. This command displays the dialog box below.

Your preferences will be saved in AIMGPP.INI on exit if "Save settings on exit" is active. The values are restored the next time you load AIM-Postprocessor.


View menu commands

Plot Info  (Ctrl+I)

Displays information on the current plot. The information is presented in two dialog boxes, the second of which is displayed when you select the Statistics command from the first dialog box. The dialog boxes are shown below.

The Simulation Statistics dialog box differs from analysis to analysis. The one shown above is for transient analysis.

Zoom  (Ctrl+Z)

This command lets you change axis limits with the mouse by drawing a rectangle which defines the limits of the axis. To perform the zooming, follow these steps:

Turn zooming on by selecting the View Zoom command.

Position the mouse cursor where you want the upper left corner of your view area to be. Press and hold the right mouse button.

Drag the mouse cursor down to the lower right corner of your view area and release the button.

The graph is then redrawn with the new axis limits.

When you turn zooming off by selecting the View Zoom command once more, you reset the axis limits to their pervious values.

Show/Hide Cursors  (Ctrl+U)

See Cursors.

Show/Hide Legends  (Ctrl+L)

Shows or hides the legends of the active graph.


Window menu commands

Commands in the Window menu act on document windows and their icons only.

Tile Horizontal  (Alt+H)

Tiles windows side by side horizontally.

Tile Vertical  (Alt+V)

Tiles windows side by side vertically.

Cascade  (Alt+C)

Stacks the windows in a cascade.

Arrange Icons  (Alt+I)

Arranges the icons at the bottom row of the main window.

Close All  (Alt+A)

Closes all graph and table windows.

The menu items below the separator are the window titles of all the graph and table windows. When you select one of these titles, you make the corresponding graph or table window the active window. This window is placed in front of all the other windows.


Help menu commands

Contents

Displays the AIM-Postprocessor help window.

About

Displays the AIM-Postprocessor About dialog box.