Tools - Settings - View - Viewer -
Under "Tools → Settings → View → Viewer" in the tab "Converter" the following settings are offered for the viewer and/or the quick viewer.
These settings are applied for the:
Assignment of filters and programs (converters)
Different file extensions (column "filter") may be assigned to different converters (in the column "program").
In the above example, files with the extensions "doc", "docx", "xls" and "xlsx" are assigned to the converter "xdoc2txt.exe".
Converters are programs that read out pure unformatted text from formatted text files and return the unformatted text in a temporary file. FreeCommander displays the temporary file containing unformatted text.
Examples for formatted text files are: DOC, DOCX, RTF, HTM, HTML, PDF, XLS, XLSX, XML, PPT, HLP.
The content of the input field "Target file extension" defines the extension of the temporary file.
Calling a converter
If the content of the highlighted file is to be shown and its file extension is not listed in the tab "General", it is converted by the program that is assigned to the first matching filter. Only checked rows are taken into account when matching a filter.
The following buttons are available for editing the list of filters and converter programs:
The input box "program" specifies the program which should perform the action for the highlighted filter.
The input box "parameter" specifies any parameters required for the program in the highlighted row.