Add font control variables to xrdp.ini

This commit adds the variables fv1_select and default_dpi to
xrdp.ini. These variables allow for a different font to be
loaded, depending on the DPI of the login screen.

docs/man/xrdp.ini.5.in

@@ -125,12 +125,12 @@ separator as the password supplied by the user and treats it as autologon. If no
 defaults to \fBfalse\fP.
 
 .TP
-\domain_user_separator\fP=\separator\fP
+\fBdomain_user_separator\fP=\fBseparator\fP
 If specified the domain name supplied by the client is appended to the username separated
 by \fBseparator\fP.
 
 .TP
-\enable_token_login\fP=\fI[true|false]\fP
+\fBenable_token_login\fP=\fI[true|false]\fP
 If set to \fB1\fP, \fBtrue\fP or \fByes\fP, \fBxrdp\fP requires clients to include username and
 password initial connection phase. In other words, xrdp doesn't allow clients to show login
 screen if set to true. If not specified, defaults to \fBfalse\fP.
@@ -212,6 +212,18 @@ These options override the colors used internally by \fBxrdp\fP(8) to draw the l
 Colors are defined using a hexadecimal (hex) notation for the combination of Red, Green, and Blue color values (RGB).
 The lowest value that can be given to one of the light sources is 0 (hex 00).
 The highest value is 255 (hex FF).
+.TP
+\fBfv1_select\fP=\fI130:sans-18.fv1,0:sans-10.fv1\fP
+Selects a default fv1 font.
+This parameter is a comma-separated list of DPI:name pairs.  The list
+is scanned from left-to-right. The font used is the first font whose DPI
+value is less-than-or-equal to the vertical DPI of the monitor used for
+the login screen.
+.TP
+\fBdefault_dpi\fP=\fI96\fP
+Default DPI used for a monitor if the client does not send physical
+size information.
+
 
 .SH "LOGGING"
 The following parameters can be used in the \fB[Logging]\fR section: