... If you try to run the program, and it says it can't find graphcap, or font, or edit files, you probably don't have a .sm file. ... If it is there, it must have been edited to look for the files in the correct place, and not be trying to read them from Baltimore. ... If you try to plot a vector that you read from a file, and it says the vector is not defined, it probably means that the file has some non numeric stuff in it, that you didn't skip over with the lines command. ...