To display keyword values in a text format, use the form
xshow -s service key1 key2 key3 key4 key5
where service is the service name or keyword library name, such as "lris", "dcs", "ao", or "nirc". This is the same format as "modify" and "show" command access to keyword libraries. "key1" through "key5" are keywords within this library.
As an example, the following shows a DCS xshow screen, displaying RA, Dec, UTC, and various other useful parameters:
This was invoked by the command
xshow -s dcs lst ut ha ra dec airmass \ poname targname axestat telfocus secfocus tubetemp domeposn az el parang \ rotpposn rotposnNote that the left column contains the keyword name, and the right column contains the value; the same information seen if you were to type "show -s dcs lst", except that the show command may have additional comments such as units after the value.
Also note that the two columns are always forced to have the same width. Very long keyword names or (more likely) values will force the window to resize to a large width, potentially with a lot of wasted white space.
The flag "-twocol" can be used to create a four-column (despite the flag name!) list, two columns each of (name, value) pairs. The end of this Web page discusses other command-line options.
xshow can alternatively display a time series of one keyword value.
Need an example and image.
|-serv service||    ||
defines the service or keyword library.
This is REQUIRED. It is possible to define more than one service name, and include keywords from both services. This may impact performance and stability of the xshow, however, and is generally avoided.
|-twocol||    ||uses two columns of (name, value) pairs, rather than one.||-noprime||    ||xxx||-nohead||    ||xxx||-noquit||    ||removes the "quit" button from the xshow display.||-histo||    ||defines the window as a graphical display. Generally a number of X resources must then be defined as "-xr "resource: value" as shown below.||-aut||    ||xxx||-xr "xshow*srows*fontList: 10x20"||    ||defines a font size, in this case 10x20 pixels, for a text display.||-xr "xshow*trend.max0: 200"||    ||defines the maximum y-axis value for a graphical display. In this case it is 200.||-xr "xshow*trend.min0: 0"||    ||defines the minimum y-axis value for a graphical display. In this case it is 0.||-xr "xshow*trend.timeBase: 3600"||    ||defines the length of the timeline in seconds for a graphical display. In this case the last 3600 seconds of time will be shown.||-ti title||    ||defines a title for the window. Strings with spaces and special characters must be enclosed in quotes.||-n icon-name||    ||sets the name displayed under the icon when the xshow window is iconified.|