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-rw-r--r--erts/doc/src/run_erl.xml8
1 files changed, 8 insertions, 0 deletions
diff --git a/erts/doc/src/run_erl.xml b/erts/doc/src/run_erl.xml
index 7bf7f559c5..da08859c7b 100644
--- a/erts/doc/src/run_erl.xml
+++ b/erts/doc/src/run_erl.xml
@@ -144,6 +144,14 @@
<item>The size (in bytes) of a log file before switching to a
new log file. Default is 100000, minimum is 1000 and maximum is
approximately 2^30.</item>
+ <tag>RUN_ERL_DISABLE_FLOWCNTRL</tag>
+ <item>If defined, disables input and output flow control for the pty opend by run_erl.
+ Useful if you want to remove any risk of accidentally blocking the flow control
+ by hit Ctrl-S (instead of Ctrl-D to detach).
+ Which may result in blocking of the entire beam process
+ and in the case of running heart as supervisor
+ even the heart process will be blocked when writing log message to terminal.
+ Leaving the heart process unable to do its work.</item>
</taglist>
</section>