Essentially I think it is/was a proposed flag. Essentially the thinking behind it (through whatever flag-codes) is something like that the stripes on a flag should only be point left to right during war/while under military-rule, while during peacetime/civilian-rule the civil version should be flown which features up & down stripes as well as a different color pattern in some iterations.

I think its based on similar symbolic reasoning to things like the direction that the head of the eagle on the on various governmental US seals. One direction indicates war/military-rule, the other way would indicate peace/civilian-rule.