(NB: if you want to run it as an application under DOS, get apl.zip and java runtime) This applet allows you to practice APL in a simple way. Functions available: almost all APL primitives (to type them, enter its Symbol Name enclosed with {} and replacing blank with _ Examples: {iota}15 4 5{rho}{iota}20 0 1 1 0{up_caret_tilde}1 0 0 1 variables can be created and used user functions can be defined