If fontno is not an integer, then it is taken to be a textstring with the desired fontname. More details can be found in the psbasemap man pages. Same syn tax as -Jx . Append r if lower left and upper right map coordi nates are given instead of wesn. No space between the option flag and the associated argu ments.
Sets map boundary tickmark intervals.
See psbasemap for details. Only used if -W is specified. Optionally append a pen for this line. Number of header records can be changed by editing your .gmt defaults file. If used, GMT default is 1 header record.