# Special Designators Used in Programming

Special Designators
Value | Definition
--- | ---
V | A value of one or more digits which may include a decimal point or minus sign.
N | One or more digits representing a whole number. No decimal point allowed
DN or A | Phone Number string (can be any length). See Keycode Interpretation Table.
1/0 | Used to turn a function ON or OFF.
Z | A channel number of one or more digits. Limited only by the number of channels available. Leading zeros are not required.
¶ | Depends on SNA
· | Depends on Model
Note: You will notice that the Keycodes are displayed with spaces. These spaces are for readability only. Spaces should be ignored when entering Keycodes from the Front Panel or Over The Phone.