This is just to add to Jim's reply. From the JMP main menu select Help>Scripting Index> All Categories find some of these table messages.
If you are learning JSL, look up Row State, in the JMP Scripting Guide. The example code is meant for Big Class.jmp.
dt<<color by column(:sex);
dt<<marker by column(:sex);
dt<<select where(:sex=="F");
dt<<colors(14)<<markers(15);
dt<<select where(:sex=="M");
dt<<colors(8)<<markers(12);
dt<<clear select;
dt << select rows(1::5);
dt << Colors("Blue");
dt<<clear select;