reorg manual tests doc

Dependencies

• [2] 2L5MEZV3 experiment: new edit namespace
• [3] 66X36NZN a little more prose describing manual_tests
• [4] DBNRULIJ record one more case I can't automatically detect
• [5] WOXIYUTL bugfix: manage screen_top and cursor when resizing
• [6] 3ZYCPNQY clearer copy
• [7] 4AXV2HG4 all pending manual tests done!
• [8] S7ZZA3YE ugh, handle absolute as well as relative paths
• [*] BJ5X5O4A let's prevent the text cursor from ever getting on a drawing

Change contents

• replacement in Manual_tests.md at line 6
  [3.211]→[3.211:227](∅→∅)
  − ### Compromises
  [3.211]

  [3.227]
  + * Initializing settings:

  + - from previous session

  + - Filename as absolute path

  + - Filename as relative path

  + - from defaults

  +

  + ### Other compromises
• edit in Manual_tests.md at line 36
  [2.16279]→[3.220:381](∅→∅),[3.1589]→[3.220:381](∅→∅)
  −

  − ### Todo list

  −

  − * Initializing settings:

  − - from previous session

  − - Filename as absolute path

  − - Filename as relative path

  − - from defaults