Page breaking

• How to Use Breaks with LaTeX’s multicol Package
  In LaTeX’s multicol environment, use \columnbreak for a deliberate column break; \filbreak is a plain-TeX page-break macro, not the right tool.
• How to Add a Page Break After Every Subsubsection in LaTeX
  Use titlesec’s after-code argument to run \clearpage after each subsubsection heading, while remembering that it breaks before the section’s text.
• Can Beamer Break Frames Inside a Multicolumn Environment?
  Beamer cannot reliably break a slide inside a multicols layout. Use allowframebreaks for flowing text or create successive frames with columns.