The default import hook understands the following escape sequences. They may appear at any position within the line:

\33u

Set the soft style to underline.

\33b

Set the soft style to bold.

\33i

Set the soft style to italic.

\33n

Set the soft style back to normal.

\33h

Highlight the current line.

\33p[x]

Change to color x, where x is taken from the colormap. 0 means normal. The color is reset for each new line.

\33P[RRGGBB]

Change front color to the specified RGB color. The RGB color has to be specified in the form of six hexadecimal digits RRGGBB. This is only possible on true colour screens. The color is reset for each new line.

\33P[AARRGGBB]

Change front color to the specified RGB color and apply alpha blending at the specified intensity. The RGB color has to be specified in the form of six hexadecimal digits RRGGBB which have to be prefaced with two alpha channel digits AA specifying the blending intensity. This is only possible on true colour screens. The color is reset for each new line.

The following sequences are only valid at the beginning of a line. If they are placed elsewhere, the result is undefined (they might be ignored or not):

\33l

Left justify current and following lines.

\33r

Right justify current and following lines.

\33c

Center current and following lines.

\33[s:x]

Create a separator. x is a bit combination of flags:

Bit 0 set

Top placement of separator.

Bit 1 set

Middle placement of separator.

Bit 2 set

Bottom placement of separator.

Bit 3 set

Draw separator on top of text (strike through).

Bit 4 set

Make separator extra thick.

The following values may be passed to this attribute:

Plain

Use default import mode (see above).

MIME

This built-in hook will convert quoted-printables (e.g. "=E5") to the ASCII representation, merge lines ending with a "=", wordwrap the text (using the value set with TextEditor.ImportWrap), highlight all lines that start with ">", make real *bold*, /italic/, _underline_ and #colored# text, and replace <sb> or <tsb> with a real separator bar. It will stop parsing upon reaching a NULL byte.

The color used for #colored# text is colormap entry 6, which defaults to MPEN_FILL. To override it, just supply a colormap with entry 6 set to whatever color you would like.

MIMEQuoted

Like the MIME import hook, but each line gets quoted and highlighted.

EMail

Like the MIME import hook, but it doesn't convert quoted printables.

Note, that the last three hooks also evaluate the escape sequences described for the Plain import hook type. While it never was documented there are some programs insisting on this side effect of an old implementation. Hence starting with version 51.13 this behaviour had to be official supported.