- open/rdonlyconstant
- open/wronlyconstant
- open/rdwrconstant
- open/readconstant
- open/writeconstant
- open/creatconstant
- open/appendconstant
- open/exclconstant
- open/nocttyconstant
- open/nonblockconstant
- open/truncconstant
- open/syncconstant
- open/fsyncconstant
- open/binaryconstant
- open/textconstant
Open flags used with the file-open procedure. open/read is a convenience synonym for open/rdonly, as is open/write for open/wronly.