Computer Software Operations

CTRL+H generates the backspace character in Unix shells and readline-enabled programs, erasing the character before the cursor. This is equivalent to pressing the backspace key. CTRL+W erases a word, CTRL+S stops terminal output, and CTRL+Q resumes it.

CTRL+B moves the cursor backward one character in readline editing mode (used by bash and other Unix shells). This follows emacs-style keyboard shortcuts where B stands for 'backwards.' CTRL+C interrupts, CTRL+Z suspends, and CTRL+P moves to the previous history command.

CTRL+P fetches the previous command from shell history, effectively 'pasting' the last line you entered. CTRL+C interrupts processes, CTRL+B moves the cursor back, and CTRL+U deletes from cursor to line start.

CTRL+W deletes the word before the cursor in Unix shells - so in 'mv file1 file2', if your cursor is after 'file2', it removes 'file2'. CTRL+C sends interrupt signal, CTRL+B moves cursor back one character, CTRL+D sends end-of-transmission or logout.

In Excel, Ctrl+- (Ctrl minus) is the keyboard shortcut to delete the selected row(s) or cells. The Ctrl+ key typically opens insert dialog, while Shift combinations are used for selection, not deletion.

In Microsoft Outlook, Ctrl+U marks selected email messages as unread. Ctrl+Q is for marking as read, Ctrl+N creates new messages, and Ctrl+D deletes items. The U key was chosen to match 'Unread'.

Alt + D is the keyboard shortcut to move focus to the Address bar in Internet Explorer. This shortcut works across multiple versions of Internet Explorer and is commonly used to quickly type or paste a URL without clicking.

Ctrl + Enter is the standard keyboard shortcut to insert a page break in Microsoft Word. This shortcut works in all versions of Word and is commonly used to force content onto a new page, unlike Ctrl + Backspace which deletes words.

Returning false from a key event handler like onKeyDown cancels the default browser action of that key press, effectively cancelling the keypress event. The keyup event will still fire, and keydown itself has already occurred, so other options are incorrect.

Text Box Prompt - this prompt type accepts a value typed by the user to filter or retrieve data. Unlike date prompts (specific to dates) or value prompts (which may use dropdowns), text box prompts allow free-text input for data retrieval.

Ctrl+Esc is a Windows keyboard shortcut that opens the Start menu, providing quick access to programs and system functions. It's equivalent to clicking the Start button.

F5 is the standard keyboard shortcut used across modern web browsers and file explorers (like Windows Explorer) to refresh the current view or page content. F1 is typically for help, F2 is for renaming, and F3 is for searching.

Alt+Enter opens the properties window for the selected file, folder, or icon in Windows. This displays information like file attributes, size, location, and other metadata.

Alt + Print Screen captures only the currently active window to the clipboard. Print Screen alone captures the entire desktop, not just the current program. F6 and Insert keys serve different purposes in Windows.