features.md

@@ -37,26 +37,22 @@ The following attribute functions are defined:
 
 ## Syntactic Features
 
-* **ldep_s0r**
-* **rdep_s0r**
-* **ldep_s1r**
-* **rdep_s1r**
-* **ndep_b0**
-* **ndep_s0**
-* **ldep_b0r**
-* **rdep_b0r**
+* **ldep_s0r** label of the leftmost dependent of s0
+* **rdep_s0r** label of the rightmost dependent of s0
+* **ldep_s1r** label of the leftmost dependent of s1
+* **rdep_s1r** label of the rightmost dependent of s1
+* **ndep_s0** number of dependents of s0
 
 ## Distance Features
 
-* **dist_s0_b0**
+* **dist_s0_b0** linear distance between s0 and b0
 
 ## Configurational Features
-* **sh**
-* **bh**
-* **t1**
-* **t2**
-* **t3**
-* **t4**
+* **sh** number of elements in the stack
+* **t1** code of the previous transition (the transition that led to the current configuration)
+* **t2** code of the transition preceding t1
+* **t3** code of the transition preceding t2
+* **t4** code of the transition preceding t3
 * **mvt0**
 * **mvt1**
 * **mvt2**