smerge-context-menu

smerge-context-menu is a variable defined in `smerge-mode.el'.
Its value is

(keymap
 (Keep\ Current menu-item "Keep Current" smerge-keep-current :help "Use current (at point) version")
 (Kill\ Current menu-item "Kill Current" smerge-kill-current :help "Remove current (at point) version")
 (Keep\ All menu-item "Keep All" smerge-keep-all :help "Keep all three versions")
 (nil-9 menu-item "---")
 (More\.\.\. menu-item "More..." menu-function-191 :key-sequence nil :help "Show full SMerge mode menu"))

Documentation:
Context menu for mine area in `smerge-mode'.