=. tis·dot

=.  wing  hoon  hoonChange the value of a leg of the subject

=.  changes the value of one leg of the subject. Technically =. creates a new subject, identical to the old subject except with the specified change.

Tisdot takes 3 children:

  1. the face from the subject you intend to modify,
  2. the new value for that face
  3. the following hoon which can use the face’s new value in evaluation, until that evaluation is complete
Documentation on urbit.org