#### 25.2.29 software-type, software-version [Function]

`software-type` <no arguments> ⇒ description

`software-version` <no arguments> ⇒ description

#### Arguments and Values::

description—a string or nil.

#### Description::

software-type returns a string that identifies the generic name of any relevant supporting software, or nil if no appropriate or relevant result can be produced.

software-version returns a string that identifies the version of any relevant supporting software, or nil if no appropriate or relevant result can be produced.

#### Examples::

     (software-type) ⇒  "Multics"
     (software-version) ⇒  "1.3x"

#### Affected By::

Operating system environment.

#### Notes::

This information should be of use to maintainers of the implementation.