Control codes
-------------

code    input (keyb)        output (screen)
------  ------------------  -------------------
0   00  cs/ss+cs/8
1   01  cs/ss+cs/9
2   02  cs/ss+8
3   03  cs/ss+9
4   04  cs/3 (True video)
5   05  cs/4 (Inv video)
6   06  cs/2 (caps lock)    tab (PRINT ,)
7   07  cs/1 (Edit)
8   08  cs/5 (Left)         backspace
9   09  cs/8 (Right)           
10  0a  cs/6 (Down)            
11  0b  cs/7 (Up)
12  0c  cs/0 (Delete)          
13  0d  Enter               cr+lf
14  0e  cs/ss (Ext mode)
15  0f  cs/9 (Graph mode)
16  10  cs/ss+0             INK
17  11  cs/ss+1             PAPER
18  12  cs/ss+2             FLASH
19  13  cs/ss+3             BRIGHT
20  14  cs/ss+4             INVERSE
21  15  cs/ss+5             OVER
22  16  cs/ss+6             AT
23  17  cs/ss+7             TAB
24  18  cs/ss+cs/0
25  19  cs/ss+cs/1
26  1a  cs/ss+cs/2
27  1b  cs/ss+cs/3
28  1c  cs/ss+cs/4
29  1d  cs/ss+cs/5
30  1e  cs/ss+cs/6
31  1f  cs/ss+cs/7


User defined graphics (UDG)
---------------------------

code    char
------  ----
144 90  A
145 91  B
146 92  C
147 93  D
148 94  E
149 95  F
150 96  G
151 97  H
152 98  I
153 99  J
154 9a  K
155 9b  L
156 9c  M
157 9d  N
158 9e  O
159 9f  P
160 a0  Q
161 a1  R
162 a2  S
163 a3  T
164 a4  U


Basic keywords
--------------

code    keyword
------  -------
165 a5  RND             
166 a6  INKEY$          
167 a7  PI              
168 a8  FN              
169 a9  POINT           
170 aa  SCREEN$         
171 ab  ATTR
172 ac  AT              
173 ad  TAB             
174 ae  VAL$            
175 af  CODE
176 b0  VAL             
177 b1  LEN             
178 b2  SIN             
179 b3  COS
180 b4  TAN             
181 b5  ASN             
182 b6  ACS             
183 b7  ATN
184 b8  LN              
185 b9  EXP             
186 ba  INT             
187 bb  SOR
188 bc  SGN             
189 bd  ABS             
190 be  PEEK            
191 bf  IN
192 c0  USR             
193 c1  STR$            
194 c2  CHR$            
195 c3  NOT
196 c4  BIN             
197 c5  OR              
198 c6  AND             
199 c7  <=
200 c8  >=              
201 c9  <>              
202 ca  LINE            
203 cb  THEN
204 cc  TO              
205 cd  STEP            
206 ce  DEF FN          
207 cf  CAT
208 d0  FORMAT          
209 d1  MOVE            
210 d2  ERASE           
211 d3  OPEN #
212 d4  CLOSE #         
213 d5  MERGE           
214 d6  VERIFY          
215 d7  BEEP
216 d8  CIRCLE          
217 d9  INK             
218 da  PAPER           
219 db  FLASH
220 dc  BRIGHT          
221 dd  INVERSE         
222 de  OVER            
223 df  OUT
224 e0  LPRINT          
225 e1  LLIST           
226 e2  STOP            
227 e3  READ
228 e4  DATA            
229 e5  RESTORE         
230 e6  NEW             
231 e7  BORDER
232 e8  CONTINUE        
233 e9  DIM             
234 ea  REM             
235 eb  FOR
236 ec  GO TO           
237 ed  GO SUB          
238 ee  INPUT           
239 ef  LOAD
240 f0  LIST            
241 f1  LET             
242 f2  PAUSE           
243 f3  NEXT
244 f4  POKE            
245 f5  PRINT           
246 f6  PLOT            
247 f7  RUN
248 f8  SAVE            
249 f9  RANDOMIZE       
250 fa  IF              
251 fb  CLS
252 fc  DRAW            
253 fd  CLEAR           
254 fe  RETURN          
255 ff  COPY    
