Property:Has cap on gain
A Record of the cap on how high a particular action can raise a quality (to be precise, a pair of Cap quality, Cap amount). It should only be used on Action pages in the respective "quality increase" template.
This value is the "soft max" that is available from this particular action. For example, Add a dash of zee-adventure! can only increase Potential up to 90 + 2 = 92 (and thus would set this property to 92), whereas Add a dash of heartbreak can do it up to 110 + 5 = 115 (and thus would set this property to 115).
A lot of actions that increase quirks have a cap of 5, 10 or 15, and should set this property as such. For example, 'Naturally I seized the opportunity to extend my experience' can only increase Hedonist up to 10.
Use Property:Has cap on the quality page for "hard max" restrictions of how much a quality can be raised, such as Favours only going up to 7.