HEAP_NOSAVE: Clear the save attribute of pointer or object heap variables.

HEAP_SAVE: Query whether a pointer or object heap variable is savable.

IDL_Savefile: Object that provides complete query and restore capabilities for IDL SAVE files.

IRESOLVE: Resolve all code required for the iTools framework.

JOURNAL: Log commands to a file.

RESOLVE_ALL: Iteratively resolve and compile any necessary procedures or functions.

RESTORE: Restore variables and routines from an IDL SAVE file.

SAVE: Save variables, system variables, or routines in a file.