Write Presets To File - This exports presets as a plain text file. You may manually edit this text in any text editor, edit or rename existed presets, create new presets, remove not needed ones and sort presets in more suitable order. See Presets In Details for more info.
Read Presets From File - Imports presets from plain text file. It reads and replace all presets. If you want to edit only one preset, you have to export all preset, edit one that you want, and import edited file.
Open Preset Editor For - This shows Crop Setup panel with opened drawing that depicts human figures with ideal proportions for different ages.