X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fhelp%2FC%2Fsec_tactics.xml;h=cd26700ab703a885027108ae4bd5fa217dea8830;hb=db13adb173da540aefbc2aa2d137cebe8d6a2afe;hp=53a20ac6a78e3c07404d442cb8b7a0de17c7b661;hpb=65317d14f32bc24b3e9ed4ea144833dd8517773a;p=helm.git
diff --git a/helm/software/matita/help/C/sec_tactics.xml b/helm/software/matita/help/C/sec_tactics.xml
index 53a20ac6a..cd26700ab 100644
--- a/helm/software/matita/help/C/sec_tactics.xml
+++ b/helm/software/matita/help/C/sec_tactics.xml
@@ -1578,6 +1578,46 @@ its constructor takes no arguments.
+
+
+ subst
+ subst
+ subst
+
+
+
+ Synopsis:
+
+ subst
+
+
+
+ Pre-conditions:
+
+ None.
+
+
+
+ Action:
+
+ For each premise of the form
+ H: x = t or H: t = x
+ where x is a local variable and
+ t does not depend on x,
+ the tactic rewrites H wherever
+ x appears clearing H and
+ x afterwards.
+
+
+
+ New sequents to prove:
+
+ The one opened by the applied tactics.
+
+
+
+
+
symmetry
symmetry