adding loop points in audacity

i know audacity uses a label system but i am not sure if this is the same as loop points. looking for a free way to do this that does not require sound forge.
is there a way to set the loop behavior/timing somewhere within the code?

Use an editor supporting loop points, two free ones as a start:

• wavosaur
• loopauditioneer
  If the specs of the audicity label system is known / documented, there may be possibilities for adapting the code.
  However last time I looked at creating loops in aduicity just resulted in duplicating the "loop marked" fragment to be duplicated with the repeat factor in the resulting wav.