January 2018 edit
Hello, and welcome to Wikipedia. Although everyone is invited to contribute, at least one of your recent edits, such as the one you made to Extended periodic table, did not appear to be constructive and has been reverted or removed. Please use the sandbox for any test edits you would like to make, and read the welcome page to learn more about contributing constructively to this encyclopedia. Thank you. Double sharp (talk) 23:55, 23 January 2018 (UTC)
Editing others' comments edit
Please do not edit other users' comments on talk pages, as you did here and here. See Wikipedia:Talk page guidelines#Editing others' comments. Double sharp (talk) 14:06, 20 March 2018 (UTC)
March 2018 edit
Please do not delete or edit legitimate talk page comments. Such edits are disruptive, and may appear to other editors to be vandalism. If you would like to experiment, please use the sandbox. Thank you. Double sharp (talk) 15:33, 23 March 2018 (UTC)
Please stop your disruptive editing. If you continue to delete or edit legitimate talk page comments, you may be blocked from editing. Double sharp (talk) 02:13, 26 March 2018 (UTC)
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