Routines (by topic) > Help Routines

# Help Routines

? - Invoke the IDL Online Help.

DOC_LIBRARY - Extract documentation headers from programs.

HELP - Provide information about the current session or variables.

MEMORY - Return information about current memory usage.

MK_HTML_HELP - Convert text documentation headers to HTML files.

ONLINE_HELP - Invoke the online help viewer.

STRUCT_HIDE - Prevent HELP from displaying structure or object information.