How to use" use the current transform"?

q1:what is the different between enable this function or disable this function ?

q2:what is the specific steps to use this function?

Use Current Transform
When a paint stroke set is completed, the paint tool places the complete set of parameters into
memory including the last source transform or position.
It can be useful to be able to move/transform the source frame while repeating the paint stroke
set. With Use Current Transform, you can enable the repeat function, which will invoke the
paint stroke set but use the current transform properties.