diff --git a/docs.it4i/snippets/sch_formula.md b/docs.it4i/snippets/sch_formula.md
new file mode 100644
index 0000000000000000000000000000000000000000..e9a1d662cbee8c9d2a76594b4d62407c2b791f45
--- /dev/null
+++ b/docs.it4i/snippets/sch_formula.md
@@ -0,0 +1,3 @@
+$$
+SCH = F*WCH
+$$
\ No newline at end of file