# Is anyone here interested in Train Signals and how they work?

**URL:** <https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759>\
**Category:** General\
**Created:** [31 December 2019 01:46 UTC](https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759 "2019-12-31T01:46:51Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [2 January 2020 23:09 UTC](https://discourse.nodered.org/t/is-anyone-here-interested-in-train-signals-and-how-they-work/19759/22 "2020-01-02T23:09:34Z")

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FireFox.

The hint is the top right corner of the second screen. Sorry: the _other right_ (wink)

`Activities Firefox Web Browser`

See new thread about sub-flows. Using Chrome I am having problems with sub-flows using it too.

[Chrome has probelms too](https://discourse.nodered.org/t/more-weird-things-happening-with-subflows/19842)

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