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- THELP - Turbo HELP Utility
-
- THELP is a permanently resident HELP utility which attempts to partially
- replace the much maligned Turbo manual. THELP is written in the TurboPascal
- language itsself.
-
- Many people have complained that the Turbo Pascal manual, being bound
- like a paper back, will not lie flat on the desk and is, therefore, hard to
- use. THELP partially alleviates this problem by making the manual unnecessary
- for all but the most difficult problem.
-
- To use run the THELP program before entering Turbo; this can easily be done
- at boot up if desired. THELP will install itsself, prompting with a reminder of
- how to enter the program. (THELP should only be installed once!) At any time
- when in TurboPascal (actually it works any time) that the user has a question
- about the format of a Pascal expression, a question about the editor, etc., merely
- enter Alt-R to wake up the online help. THELP, seeing the Alt-R, will open a
- large window on the screen and present a table of contents. By selecting
- various options, the user can usually vector himself to an example, demonstrating
- the answer to his question. To return to a higher level than one is enter
- Escape. Entering escape at the table of contents level will close the window,
- replacing whatever was there and return the user to his application undisturbed.
-
- THELP, besides being a very useful utility, is a good example of how
- to write permanently resident interrupt borrower type software in TurboPascal.
- See the LASTCOM program for more detail.
-
- Note that the help on the editor commands list two choices for every command.
- The first choice is the "WordStar" configuration (more or less the way it
- comes from Borland). The second list describes the commands installed at
- the Greenville Texas PC Club. If neither list conforms to the way the user
- has his Turbo editor installed, he has two choices: reinstall his editor to
- match one or the other lists or change the source code to match his
- installation and recompile. If the user does change the source code, it is
- recommended that he change the right list, since the left list is more
- "standard".
-
- Note further that THELP could have been made faster in opening and
- closing the screen windows by accessing display memory directly; however,
- the portability gained by using BIOS calls was deemed more important.