docs: def t_ID(self, t):
          r"""[a-zA-Z_][a-zA-Z_0-9]*"""
  
          # If the value is a reserved name, give it the appropriate type (not ID)
          if t.value in self.reserved:
              t.type = self.reserved[t.value]
  
          # If it's a function, give it the FUNC type
          elif t.value in self.functions:
              t.type = 'FUNC'
  
          return t