Article: Remove the -ir ending from the infinitive and replace it with the appropriate ending to talk about present actions. The -ir endings are -o, -es, -e, -imos, ís, and -en. For example:   Yo abro: I open.  Tú abres: You [informal] open.  Él/ella/usted abre: He/she opens; you [formal] open.  Nosotros abrimos: We open.  Vosotros abrís: You all [informal] open.  Ellos/ellas/ustedes abren: They/you all [formal] open. When you're discussing an action that doesn't extend at all into the present, the preterite tense is appropriate. Depending on your subject pronoun, you will replace the -ir with -í, -iste, -ió, -imos, -isteis, or -ieron.   Yo abrí: I opened.  Tú abriste: You [informal] opened.  Él/ella/usted abrió: He/she/you [formal] opened.  Nosotros abrimos: We opened.  Vosotros abristeis: You all [informal] opened.  Ellos/ellas/ustedes abrieron: They/you all [formal] opened. When you're talking about something that happens habitually, or that was interrupted, conjugate your verb in the imperfect tense. For an -ir verb, this means replacing the -ir with -ía, ías, ía, -íamos, íais, or -ían.   Yo abría: I was opening.  Tú abrías: You [informal] were opening.  Él/ella/usted abría: He/she was opening; you [formal] were opening.  Nosotros abríamos: We were opening.  Vosotros abríais: You all [informal] were opening.  Ellos/ellas/ustedes abrían: They/you all [formal] were opening. In Spanish, the conditional tense is used to describe actions that might happen, or that are dependent on some other condition to happen. Regular -ir verbs are conjugated using the same endings as the imperfect tense, added to the end of the infinitive rather than the verb stem.   Yo abriría: I would open [if].  Tú abrirías: You [informal] would open [if].  Él/ella/usted abriría: He/she/you [formal] would open [if].  Nosotros abriríamos: We would open [if].  Vosotros abriríais: You all [informal] would open [if]. Ellos/ellas/ustedes abrirían: They/you all [formal] would open [if]. Add an ending to the full infinitive to conjugate regular -ir verbs in future tense, just as you did with the conditional tense. Use the endings -é, -ás, -á, -emos, -éis, and -án.   Yo abriré: I will open.  Tú abrirás: You [informal] will open.  Él/ella/usted abrirá: He/she/you [formal] will open.  Nosotros abriremos: We will open.  Vosotros abriréis: You all [informal] will open.  Ellos/ellas/ustedes abrirán: They/you all [formal] will open.
Question: What is a summary of what this article is about?
Use the present tense to describe actions currently happening. Switch to the preterite tense if the action happened in the past. Move to the imperfect tense if a past action continues to happen. Add the imperfect ending to the infinitive to express the conditional tense. Pick the future tense for talking about actions that will happen.

You will need to be logged in as an administrator in order to install font files. If you don't have admin access, see the next section for a workaround. You can use a command prompt trick to reset the password for the administrator account if you don't remember it. You'll need your Windows 7 installation DVD in order to do this. Click here for instructions. There are a variety of sites that host font files that you can download and use. Make sure that you trust the site that you're downloading from. Popular font sites include dafont.com, fontspace.com, and fontsquirrel.com.  Fonts may download as a ZIP or RAR file, or may download just as the font file itself (TTF or OTF). If you download a ZIP file, double-click it to open it and find the font file(s). Drag the files to your desktop or click the "Extract all" button. If you download a RAR file, you'll need a program that can open RAR files like WinRAR or 7-Zip. Avoid any font that downloads as an EXE file or as an installer. This will allow you to see how the font looks on your screen. The font file may not show the extension, but it should have an icon of a piece of paper with a small "A" on it. You'll need to have removed the font file from the ZIP or RAR file before you can open it in Font Preview. Install button to install the font. The button is located at the top of the Font Preview window.  You can also right-click on the font file or multiple font files at once and select "Install". Another installation method is to open the Control Panel from the Start menu, click the "View by" menu and select "Small icons", open the "Fonts" option, and then drag the file(s) into the list. Depending on your computer and account settings, you may be prompted by User Account Control to confirm that you want to add the fonts, and you may get a security warning that your file was downloaded for them internet. You may also be prompted for your administrator password. Fonts should install immediately after you confirm that you want to install it. You can then select the fonts in programs that support changing fonts, such as Office or Photoshop. Older fonts may not install correctly. Make sure the font you want to install is Windows 7 compatible. If you no longer want a font that you've installed, you can remove it using the Fonts utility in the Control Panel.  Click the Start menu and open the Control Panel. Use the "View by" menu to select "Small icons" or "Large icons". Open the "Fonts" option. Find the font you want to delete in the list. You can use the search bar at the top of the window as well. Right-click on the font you want to remove and select "Delete". You will be asked to confirm that you want to remove the font. Any documents that you've created with that font will be reverted to a system font.
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One-sentence summary --
Log in as an Administrator. Find a font to download. Double-click the font file to open the Font Preview window. Click the . Confirm that you want to make changes and enter the administrator password (if prompted). Use your new fonts. Delete fonts you don't want anymore.