I have a boxed noun: ] testfile =: {2,\?15#50
┌────┬─────┬─────┬─────┬─────┬─────┬────┬────┬────┬────┬─────┬────┬───┬────┐ │9 21│21 47│47 37│37 13│13 33│33 20│20 4│4 49│49 6│6 25│25 33│33 9│9 6│6 43│ └────┴─────┴─────┴─────┴─────┴─────┴────┴────┴────┴────┴─────┴────┴───┴────┘ I want to store it in the following location on my machine: ]fn =. < 'C:\Users\skip\J904-user\temp' ┌────────────────────────────┐ │C:\Users\skip\J904-user\temp│ └────────────────────────────┘ Then I will close that J session. Later, I will start a new J session, and I want to read that saved file into a noun called 'test1' What is the J code for writing the noun into a file in the first session? What is the J code to read the file into a noun in the second session? Should I use 1!2 & 1!:1, or fwrite & fread, or something else? Where in the J doc are these file operations and their tradeoffs described? Skip Skip Cave Cave Consulting LLC ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm