As many missions require us to decipher Logos I have decided to post some information on Logos and how to recognize certain aspects of them:  This can be found in the TR wikki as well:

Common principles of Logos symbols:

• A "stickman" indicates a creature or person:
  • The number of stickmen indicates singular or plural: One stickman for singular, two for plural
  • Apostrophes "'" above the head of stickman/stickmen indicate case: One for 1st person, two for 2nd person, three for third person.
  • Parenthesis "()" around a stickman indicates possession (Genitive case)
  • It can also represent the body in general.
• Two eyes and a curving line above them for the top of the head indicate something about the mind or brain.
• A heart symbol that opens to two curves at the top indicates the or spirit or heart.
• A dot "•" in front or behind a symbol (usually a verb or action) indicates tense: In front means past, behind means future.
• Tilted angle brackets "^<>" indicate a question or uncertainty
• Four squares represent a set of objects, a dot in the center of a square represents the object is there as opposed to being absent.
• An arrow means to move or give.
• A diagonal slash thhrough something indicates it is gone or nonexistant.
• A vertical line in the center indicates the present time.
• A horizontal line at the top indicates a destination, two diagonal lines from it indicate a path.