### 4.10.2 link expressions

A link expression is:

1. an identifier of type link
2. a string describing the link

A link is described by a string which consists of two parts: a property string followed by a name string. The property string describes the type of the link (`ASCII`, `ssi` or `DBM`) and the mode of the link (e.g., open for read, write or append). The name string describes the filename of the link, resp. a network connection for ssi links.

For a detailed format description of the link describing string see:

- for ASCII links: ASCII links

- ssi links (see Ssi links)

- pipe links (see Pipe links)

- for DBM links: DBM links

> 4.10.4 ASCII links |  |
> 4.10.5 Ssi links |  |
> 4.10.6 Pipe links |  |
> 4.10.7 DBM links |  |

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