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#### 2.2.1.1 Object sub-types

Schematic element `object`s come in several subtypes.

Function: object-type object ¶

  Returns the sub-type of object as a symbol. The subtype will be one of the following symbols:

  - ‘`arc`’
  - ‘`box`’
  - ‘`bus`’
  - ‘`circle`’
  - ‘`complex`’ (indicates a component `object`)
  - ‘`line`’
  - ‘`net`’
  - ‘`path`’
  - ‘`picture`’
  - ‘`pin`’
  - ‘`text`’

Note: The word ‘`complex`’ is only used in Scheme API to define component type for historical reasons, since before it was used in the gEDA C source code. As Guile Scheme supports complex numbers, and the procedures related to working with complex numbers use the word ‘`complex`’ to describe them, any other code of both Lepton C and Scheme API uses the word ‘`component`’ instead to avoid ambiguity.

Function: object-type? object type ¶

  Returns ‘`#t`’ if and only if object is an `object` and that its subtype is type, which should be a symbol.