Appendix 6
BASIC keywords
Eagh BASIC keyword is described briefly below. If an abbreviated form of the
keyword is allowed, it is given in brackets after the full version. Note that the
abbreviation for some keywords includes an opening bracket; for example LE.
is equivalent to LEFT$( and not just LEFT$.
Many of the keywords are explained in more detail in Chapter 2. Keywords
marked || provide access to facilities beyond the scope of this guide and users
should consult the Reference Manual for further information.
| ABS | Function giving the positive value of any number. |
| ACS | Function giving the are-cosine, in radians, of any |
| number from I to 1 inclusive. | |
| ADVAL (AD.) || | „ Read data from the joystick port or buffers. |
| AND (A.) | Used as a logical or bitwise operator. |
| ASC | Function producing the ASCII code of the first |
| character in a string. | |
| ASN | Function giving the are-sine, in radians, of any |
| number from -1 to 1 inclusive. | |
| ATN | Function giving the arc-tangent, in radians, of any |
| number. | |
| AUTO (AU.) | Command to give automatic line-numbering. |
| BGET# (B.#) || | Give the code of the next character in a file- |
| BPUT# (BP.#) || | „Write the code of a character to a file. |
| CALL (CA.) | Execute a machine-code routine. |
| CHAIN (CH.) | Load and run a BASIC program. |
| CHR$ | Function producing the character with the given |
| ASCII code. | |
| CLEAR (CL.) | Clear the memory of all program variables, except |
| the resident integer variables. | |
| CLG | Clear the graphics window to the current graphics |
| background colour. | |
| App 6.1 |