This interface does not offer any wordprocessing capabilities other than that of checking when a page is complete, and then resetting the current point to the top of the next page. Thus, all spaces, lines, etc from the input text appear in the output too.
The user may also directly invoke PostScript commands to create various versions of the font, as required. Refer to PostScript language manuals for specific help regarding the PostScript font manipulation commands. If you decide to go this route, take a look at the file <#30#>itrans.pro<#30#>, it is the prologue that gets sent to the printer. It contains definitions of various commands such as <#31#>normalfont<#31#>, <#32#>slantfont<#32#>, <#33#>compressedfont<#33#>, etc, which may be used to change the font being used. These PostScript functions take a single argument:~the font size to use. All this and more information can be obtained from the prologue file, <#34#> itrans.pro<#34#>, and PostScript users should take a look at it. For example usage, look through the sample input files provided. Files ending in <#35#>.ips<#35#> are the direct PostScript input files, itrans (with the -P option) directly produces PostScript output for these files.
The file <#36#>devnac.ps<#36#> may also be useful, it contains the PostScript language definitions of this devanagari font.