PK_MARK_t   



This type represents a session MARK.  A session mark records the state
of the session so that the session may subsequently returned to this state
by a roll back or forward operation.

Used in:

PK_MARK_ask_following
PK_MARK_ask_pmarks
PK_MARK_ask_preceding
PK_MARK_ask_state
PK_MARK_create
PK_MARK_delete
PK_MARK_frustrum_t
PK_MARK_goto
PK_MARK_goto_2
PK_PMARK_ask_marks
PK_SESSION_ask_mark