The characters are displayed in a grid of boxes, each large enough to hold any single character in the font. Each character glyph is drawn using the PolyText16 request (used by the \f3Xlib\f1 routine \f3XDrawString16\f1). If the \f3-box\f1 option is given, a rectangle will be drawn around each character, showing where an ImageText16 request (used by the \f3Xlib\f1 routine \f3XDrawImageString16\f1) would cause background color to be displayed.
The origin of each glyph is normally set so that the character is drawn in the upper left hand corner of the grid cell. However, if a glyph has a negative left bearing or an unusually large ascent, descent, or right bearing (as is the case with cursor font), some character may not appear in their own grid cells. The \f3-center\f1 option may be used to force all glyphs to be centered in their respective cells.
All the characters in the font may not fit in the window at once. To see the next page of glyphs, press the Next button at the top of the window. To see the previous page, press Prev. To exit xfd, press Quit.
Individual character metrics (index, width, bearings, ascent and descent) can be displayed at the top of the window by pressing on the desired character.
The font name displayed at the top of the window is the full name of the font, as determined by the server. See xlsfonts(1) for ways to generate lists of fonts, as well as more detailed summaries of their metrics and properties.
xfd accepts all of the standard toolkit command line options along with the additional options listed below:
See \f3X11\f1(7) for a full statement of rights and permissions.