There is black dot on line number bar,but I don’t know how to add it and how to remove it.Iwant to know what it means and how to do.

I uploaded a jpg file,at the left line number bar in 8th line.Somebody know?

Check if you have SublimeLinter installed?

No,I didn’t install SublimeLinter.
My installed plugins:

ZenCoding
SideBarEnhancements
CTags
Alignment
DocBlockr
Tag
ConvertToUTF8
Themr
QuickThemes
Camaleon
Soda

Thank you as well!

it could be a mark.
check options under Edit > Mark.

It’s the “tag” plugin

It looks like a mark，but I use “Set Mark” Or “Clear Mark” couldn’t remove it.
If it is a “Tag” plugin,I Couldn’t find any operation within the “Tag” plugin to influence it,I need to know more.

Thanks all!

it’s the tag plugin, and it’s telling you that you’ve not closed the

on that line anywhere in your document.

Just on a side-note: you cannot put block level items like

in

's, only phrasing content is allowed.
That’s also probably why the tag plugin is telling you something is wrong.

Always validate your HTML to see if at least you adhere to the most basic of rules

Thanks very much!!!
Oh,yes,I haven’t closed the

tag,when I close this tag,the dot disappear automatically