When an uninstallation job is executed, all entries in the ascnnnn.sxp file of the application to be uninstalled are removed from the autoexec.bat file, provided they are not needed by another application installed on the target computer.
The Installer processes as follows lines that contain one of the commands LH, LOADHIGH, or SET:
The Installer compares program calls with the lines containing the LH and LOADHIGH commands. The LH and LOADHIGH commands are ignored in the comparison. For example, if the autoexec.bat file contains the LH C:\DRIVER.EXE program call, and the ascnnnn.sxp file also contains the C:\DRIVER.EXE entry, the line is deleted if no other application on the target computer needs the DRIVER.EXE program.
You can optionally use the SET command in the autoexec.bat file to assign a value to a variable. If you do so, and if the entry you specify is to be deleted by the uninstall job, the entry is deleted only if the variable named in the SET command is not used by another program on the target computer.
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