# print-filter command

The print-filter command controls the
ways attribute and value marks are displayed or printed.

## Syntax

```
print-filter {(options}
```

## Parameter(s)

| options | n | Makes attribute and value marks printable. |
| --- | --- | --- |
| f | Leaves attribute and value marks unchanged. | |
CAUTION: The print-filter command
should always be used in conjunction with the crt-delimiters command.

If the print-filter command
is issued without an option, the current setting status is returned.

In conjunction with the crt-delimiters command,
the print-filter command allows attribute
and value marks to display or print in three different ways, according
to this table:

```
delimiters filter print | crt statements
---------------------------------------------------------------
(f (f unchanged (x’fe’)
(n (f unchanged (x’fd’)
(f (n ’^’,’] | cr/lf
(n (n ’^’ and ’]’
```
The print-filter command takes precedence over the crt-delimiters command. As a result, when the print-filter is set to off, the crt-delimiters has no effect.
At boot time, the print-filter defaults to on.

Note: The print-filter command stops printing
when the first unprintable character is encountered.

## See also

- [crt-delimiters command](https://d3codex.com/tcl/crt-delimiters-command/)

---
Source: https://d3codex.com/tcl/print-filter-command/ - part of the D3Codex reference.