[Orgmode] Question on org-mode adding extra blank line

Hi, Sometimes (I don't know when), when I press M-return (org-meta-return) at the end of a heading, the next heading line (at the same level) is added after a blank line rather than on the next line. Looks like it is a feature and not a bug. Like this. * heading 1 (I press M-return here.) * h

[Orgmode] Elementary: How to return to the main view

Hi, >From the main view, if I click on a tag, org-mode will show only items with that tag. How to go back to the main view? Is the information I see when I click on a tag a sparse tree? If so, how to return from a sparse tree to the main view? Must be quite elementary, but I can't figure it ou