This adds text to the following sections:
1) Dive planner (Open circuit planning)
2) Dive Planner (Recreational OC planning)
3) Use of hashes to move images between directories
4) Undo/Redo feature of dive list manipulations
One image in planner text is modified.
Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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