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January 24, 2026

Comments on the APPLICATION BAR and KEYBOARD SHORTCUTS in WINDOWS and GNU/LINUX.

  • 1. Introduction
  • 2. What is the “Super” Key?
  • 3. What is the Taskbar?
  • 4. The Core Concept: Super + Number
  • 5. To Pin or Not to Pin? That is the Question.
  • 6. More Than Just Windows: The “Super + Number” Shortcut on Linux
  • 7. Beyond the OS: Browsers and Outlook
  • 8. The Bottom Line

1. Introduction

In modern desktop environments, from Windows to mainstream GNU/Linux distributions, Alt+Tab remains the go-to shortcut for window switching.

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January 8, 2026

Two open source tools for editing PDF documents: GUI versus CLI.

  • 1. Introduction
  • 2. Managing operations with PDF Arranger
  • 3. Managing the same operations with PDFtk.
  • 4. In summary

1. Introduction

The “PDF” is the essentially static document format par excellence.

However, even PDF documents can be modified, especially with operations such as deleting, adding, reversing pages, inserting text, and more.

There are various applications, including free ones, for performing these operations.

In this article, I will report some parallel observations between two systems for page manipulation: one graphical, PDF Arranger, and one command line, PDFtk.

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October 26, 2025

Four text commands in GNU/Linux, MS Windows, and, with a bit of nostalgia, MS-DOS.

  • 1. Does it still make sense to perform operations via the command line?
  • 2. How do you open a command terminal?
  • 3. The “cd” command.
  • 4. The “ls” and “dir” commands.
  • 5. The “cp” command.
  • 6. The “rm” command.
  • 7. In conclusion.

1. Does it still make sense to perform operations via the command line?

Talking about the command line in today’s operating systems might seem a bit vintage, as if the topic were a historical remnant of the first personal computers of the 1980s.

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August 2, 2025

LibreOffice Writer and non-sequential page numbering.

  • 1. Subject of the article.
  • 2. How to insert a page number other than 1.
  • 3. Change the page number when inserting a page break.
  • 4. The common denominator.

1. Subject of the article.

LibreOffice is an open source, multi-platform suite for document processing.

Great for writing, calculating, drawing, and much more.

The reference page in English can be found at this page.

Writer is the module of the Suite dedicated to word processing.

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May 23, 2025

MS Windows: xcopy and robocopy with mentions of batch procedures and rsync.

  • Copy and Paste: the universal method.
  • A short introduction to the Command Line in MS Windows.
  • Two integrated command-line solutions: xcopy and robocopy.
  • Basic scheme and some options, among many, of the robocopy command.
  • Robocopy and batch procedures.
  • Robocopy and Rsync.
  • FreeFileSync

Copy and Paste: the universal method.

To transfer files from one folder to another folder we usually use “copy and paste.”

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December 6, 2024

Study on an example of integration between Python and LaTeX

  • Subject of this article.
  • Description of the steps without using Python.
  • Python file content.
  • Program analysis.
  • Source in LaTeX generated by Python.
  • To try the program.

Subject of this article.

I am not a computer scientist but I have been using LaTeX for over ten years to write court documents. Only a few months ago I started to follow some tutorials on programming with Python.

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