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-rw-r--r--README9
-rw-r--r--README.org9
2 files changed, 14 insertions, 4 deletions
diff --git a/README b/README
index b527d21..314a00f 100644
--- a/README
+++ b/README
@@ -35,6 +35,9 @@ This collection includes:
   Fornax parses /Fornax format/, generates a `PNG' for each iteration
   which is later converted to a slideshow with `ffmpeg'.
 
+  • Solved paths are highlighted if the iteration is preceded by `|'.
+  • Illegal paths are highlighted if the iteration is preceded by `!'.
+
 
 2 Fornax Format
 ═══════════════
@@ -59,8 +62,10 @@ This collection includes:
       columns) + 1' then it may be ignored by the program that parses
       the file.
 
-  • Solved iteration must be preceded by `|' character. The program may
-    or may not use it while rendering the video.
+  • Solved iteration can be preceded by `|' character.
+
+  • Iteration that tries to walk on a blocked path can be preceded by
+    `!' character.
 
 
 2.1 Grids
diff --git a/README.org b/README.org
index abd8028..d641d65 100644
--- a/README.org
+++ b/README.org
@@ -17,6 +17,9 @@ This collection includes:
 Fornax parses /Fornax format/, generates a ~PNG~ for each iteration which is
 later converted to a slideshow with ~ffmpeg~.
 
+- Solved paths are highlighted if the iteration is preceded by ~|~.
+- Illegal paths are highlighted if the iteration is preceded by ~!~.
+
 * Fornax Format
 
 Fornax format is an intermediate output file generated after solving the
@@ -38,8 +41,10 @@ columns is known, the whole grid should be printed in a single line.
   columns) + 1~ then it may be ignored by the program that parses the
   file.
 
-- Solved iteration must be preceded by ~|~ character. The program may or
-  may not use it while rendering the video.
+- Solved iteration can be preceded by ~|~ character.
+
+- Iteration that tries to walk on a blocked path can be preceded by ~!~
+  character.
 
 ** Grids
 
/a> 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289