man mplist_push () - Add a property at the beginning of a property list.
NAME
mplist_push - Add a property at the beginning of a property list.
SYNOPSIS
MPlist* mplist_push (MPlist * plist, MSymbol key, void * val)
DESCRIPTION
The mplist_push() function inserts at the beginning of property list plist a property whose key is key and value is val.
If key is a managing key, val must be a managed object. In this case, the reference count of val is incremented by one.
RETURN VALUE
If the operation was successful, this function returns plist. Otherwise, it returns NULL.