HELPNDX

The HELPNDX variable points to the index files which are used by the Enhanced Editor and possibly by some other programming editors. With EPM, you can mark a keyword in your text and press CTRL + H. EPM then searches the index files for the marked word and if it is found, shows the online document for the keyword. The index files must be in a path defined by the BOOKSHELF or EPMPATH variable. SET HELPNDX=FILE1.NDX+FILE2.NDX+...+FILEn.NDX
 * Parameters:The HELPNDX variable contains a list of *.ndx files separated by a plus sign (+).