[doc] Explain config parser for clean_sandbox.py

Change-Id: Ice338e8a6e2eeb6cbe4c8c06b3c2667c24dc9c91
---
M scripts/clean_sandbox.py
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/scripts/clean_sandbox.py b/scripts/clean_sandbox.py
index 8d16d9d..b775d90 100755
--- a/scripts/clean_sandbox.py
+++ b/scripts/clean_sandbox.py
@@ -21,8 +21,21 @@
     -text          The text that substitutes in the sandbox, you can use this
                    when you haven't configured clean_candbox for your wiki.
 
-    -summary       Summary of the edit made by bot.
+    -summary       Summary of the edit made by bot. Overrides the default
+                   from i18n.
 
+All local parameters can be given inside a scripts.ini file. Options
+passed to the script are priorized over options read from ini file. See:
+https://docs.python.org/3/library/configparser.html#supported-ini-file-structure
+
+For example:
+
+    [clean_sandbox]
+    # the parameter section for clean_sandbox script
+    summary = Bot: Cleaning sandbox
+    text = {{subst:Clean Sandbox}}
+    hours: 0.5
+    delay: 7
 """
 #
 # (C) Leonardo Gregianin, 2006

