$Description Compiler Directive
The
$Description
string can be up to 256 characters,
enclosed in single quotes. Delphi stores the description string in
the .exe or .dll file.
Most applications should use a version information resource instead of a description string. You can provide much more detailed information. Descriptions are most useful for design-time packages because Delphi displays the description as the package name in the Install Packages dialog box.