finalize base mods to version 1

[o7Moon]

TODO:

• spelling, grammar, and ambiguity proofreading
• implement them in LRO, see if there are any problems with the current specs.
• • base.label
• • base.simline
• • base.scnline
• • base.gridver
• • base.startline
• • base.startoffset
• get opinions of others
• go and modify the version number in the specs to reflect the finalization