NAME
        LocalItemData -- get pointer to user data for local context item. (V36)

   SYNOPSIS
        data = LocalItemData(localItem);
        D0                   A0

        aptr localitemdata(struct localcontextitem *);

   FUNCTION
        Returns pointer to the user data associated with the given local
        context item. The size of the data area depends on the "dataSize"
        argument used when allocating this item. If the pointer to the item
        given (localItem) is NULL, this function returns NULL.

   INPUTS
        localItem - pointer to local context item or NULL.

   RESULT
        data - pointer to user data area or NULL if localItem is NULL.

   BUGS
        Currently, there is no way to determine the size of the user data
        area; you have to 'know'.

   SEE ALSO
        alloclocalitem(), freelocalitem(), <libraries/iffparse.h>