Appends lists to the end of given list.
Appends lists to the end of given list by NCONC.
Ensures unique names for all the variables in a groups of forms.
Removes an item from a sequence.
Executes a body of code if a form evaluates to non-nil,
Executes a body of code if a series of forms evaluates to non-nil,
Returns a body of code with each specified name bound to a similar name.