In a telex, the operator usually USES PLS instead of the word "please".

在电传中，打电传的人常用PLS来代替“请”这个词。

youdao

Please check the delivery information, if it's correct, pls click here.

请核对送货信息，如准确无误，请点击。

youdao

Please try to connect with this machine, and if any questions, PLS contact me.

请尝试连接这台机器，有问题请联系我。

youdao

Please becoming pls is just one example.

BBC: Unilever is urging staff to think before they send e-mails