\\[riffle-scroll-other-window] Scroll contents one line
\\[riffle-scroll-other-window-down] Scroll contents one line
\\[riffle-summary-to-contents] Concatenate all contents
\\[riffle-scroll-other-window] Scroll contents one line
\\[riffle-scroll-other-window-down] Scroll contents one line
\\[riffle-summary-to-contents] Concatenate all contents
\\[howm-view-filter-uniq] Remove duplication of same file
\\[howm-view-summary-shell-command] Execute command in inferior shell
\\[howm-view-filter-uniq] Remove duplication of same file
\\[howm-view-summary-shell-command] Execute command in inferior shell