Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

User-defined type identifier and record element names
cannot contain periods. A variable name cannot contain a
period if the part of the name before the period has been
used in an AS usertype clause anywhere in the program.
 
Although variable names can contain periods, it is
recommended that a period be used only as a record variable
separator. If you have programs that use a period in
variable names, you could change them to use mixed case
instead. For example, variable ALPHA.BETA would become
AlphaBeta.