| Identifier | Type | Defined in |
| A_AND | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_NORMAL | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_OR | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_REPLACE | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_REVERSE | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_SHADE_H | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_SHADE_NS | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_SHADE_PS | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_SHADE_V | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_SHADED | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_THICK1 | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| A_VAR_TAG | Constant | args.h, estack.h |
| A_XOR | Constant | graph.h, graphing.h, unknown.h, wingraph.h |
| AB_getGateArrayVersion | Function (ROM Call) | system.h |
| AB_prodid | Function (ROM Call) | system.h |
| AB_prodname | Function (ROM Call) | system.h |
| AB_serno | Function (ROM Call) | system.h |
| abort | Function (Macro) | stdlib.h |
| ABS_TAG | Constant | args.h, estack.h |
| abs | Function (Macro) | math.h, stdlib.h, timath.h |
| ABT_dialog | Function (ROM Call) | events.h |
| ACOS_RAD_TAG | Constant | args.h, estack.h |
| ACOS_TAG | Constant | args.h, estack.h |
| acos | Function (ROM Call) | math.h, timath.h |
| ACOSH_TAG | Constant | args.h, estack.h |
| acosh | Function (ROM Call) | math.h, timath.h |
| ACOT_TAG | Constant | args.h, estack.h |
| ACOTH_TAG | Constant | args.h, estack.h |
| ACSC_TAG | Constant | args.h, estack.h |
| ACSCH_TAG | Constant | args.h, estack.h |
| ACTIVITY_BUSY | Constant | events.h, statline.h |
| ACTIVITY_IDLE | Constant | events.h, statline.h |
| ACTIVITY_NORMAL | Constant | events.h, statline.h |
| ACTIVITY_PAUSED | Constant | events.h, statline.h |
| ADD_TAG | Constant | args.h, estack.h |
| add_to_top | Function (ROM Call) | estack.h |
| add1_to_top | Function (ROM Call) | estack.h |
| ADDELT_TAG | Constant | args.h, estack.h |
| AddSymToFolder | Function (ROM Call) | vat.h |
| all_tail | Function (ROM Call) | estack.h |
| alloca | Function (Builtin) | alloc.h, stdlib.h |
| alphaLockOff | Function (ROM Call) | kbd.h |
| alphaLockOn | Function (ROM Call) | kbd.h |
| AMS_1xx | Constant (Pseudo-Constant) | compat.h |
| AMS_2xx | Constant (Pseudo-Constant) | compat.h |
| AMS_3xx | Constant (Pseudo-Constant) | compat.h |
| and_onto_top | Function (ROM Call) | estack.h |
| AND_TAG | Constant | args.h, estack.h |
| ANDPIC_ITAG | Constant | estack.h |
| ANDPIC_TAG | Constant | estack.h |
| ANGLE_TAG | Constant | args.h, estack.h |
| ANS_TAG | Constant | args.h, estack.h |
| any_tail | Function (ROM Call) | estack.h |
| AP_CURRENT | Constant | events.h |
| AP_NULL | Constant | events.h |
| AP_RUNNING | Constant | events.h |
| AP_SIDE_A | Constant | graphing.h, unknown.h |
| AP_SIDE_B | Constant | graphing.h, unknown.h |
| AP_SIDE_UNKNOWN | Constant | graphing.h, unknown.h |
| AP_START_CURRENT | Constant | events.h |
| APD_TIMER | Constant | system.h |
| APPEND_TAG | Constant | estack.h |
| APPROX_TAG | Constant | args.h, estack.h |
| APPROXIMATE_TAG | Constant | args.h, estack.h |
| ARb_int_count | Variable (ROM Call) | estack.h |
| ARB_INT_TAG | Constant | args.h, estack.h |
| ARb_real_count | Variable (ROM Call) | estack.h |
| ARB_REAL_TAG | Constant | args.h, estack.h |
| ARCHIVE_ITAG | Constant | estack.h |
| ARCHIVE_TAG | Constant | estack.h |
| ARCLEN_TAG | Constant | args.h, estack.h |
| are_expressions_identical | Function (ROM Call) | estack.h |
| are_units_consistent | Function (ROM Call) | unknown.h |
| ArgCount | Function (Macro) | args.h |
| ARROW_DOWN | Constant | kbd.h |
| ARROW_LEFT | Constant | kbd.h |
| ARROW_RIGHT | Constant | kbd.h |
| ARROW_UP | Constant | kbd.h |
| Arrows | Type (Enumeration) | kbd.h |
| ASEC_TAG | Constant | args.h, estack.h |
| ASECH_TAG | Constant | args.h, estack.h |
| ASIN_RAD_TAG | Constant | args.h, estack.h |
| ASIN_TAG | Constant | args.h, estack.h |
| asin | Function (ROM Call) | math.h, timath.h |
| ASINH_TAG | Constant | args.h, estack.h |
| asinh | Function (ROM Call) | math.h, timath.h |
| ASM_call | Function (Macro) | system.h |
| ASM_fastcall | Function (Macro) | system.h |
| ASM_PRGM_TAG | Constant | args.h, estack.h |
| ASM_TAG | Constant | args.h, estack.h |
| assert | Function (Macro) | assert.h |
| assign_between | Function (ROM Call) | unknown.h |
| ASSIGN_TAG | Constant | args.h, estack.h |
| ATAN_RAD_TAG | Constant | args.h, estack.h |
| ATAN_TAG | Constant | args.h, estack.h |
| atan | Function (ROM Call) | math.h, timath.h |
| atan2 | Function (ROM Call) | math.h, timath.h |
| ATANH_TAG | Constant | args.h, estack.h |
| atanh | Function (ROM Call) | math.h, timath.h |
| atexit_t | Type (Pointer) | stdlib.h |
| atexit | Function (tigcc.a) | stdlib.h |
| atof | Function (tigcc.a) | math.h, stdlib.h, timath.h |
| atoi | Function (tigcc.a) | stdlib.h |
| atol | Function (tigcc.a) | stdlib.h |
| Attrs | Type (Enumeration) | graph.h, graphing.h, unknown.h, wingraph.h |
| AUGMENT_TAG | Constant | args.h, estack.h |
| AUTO_INT_1 | Constant | intr.h |
| AUTO_INT_2 | Constant | intr.h |
| AUTO_INT_3 | Constant | intr.h |
| AUTO_INT_4 | Constant | intr.h |
| AUTO_INT_5 | Constant | intr.h |
| AUTO_INT_6 | Constant | intr.h |
| AUTO_INT_7 | Constant | intr.h |
| AUTO_INT_COUNT | Constant | intr.h |
| AUTO_INT | Function (Macro) | intr.h |
| AutoInts | Type (Enumeration) | intr.h |
| AVGRC_TAG | Constant | args.h, estack.h |