1. Tagging Users (Like “Ping” in Social Media):
   You can tag users in Google Sheets to notify them about a specific cell or comment.
   To tag, type the “@” symbol, then start typing the name or email of the person you want to tag.
   A list of potential users will appear, and you can select the one you want to tag.
2. Freezing Rows or Columns:
   Freezing allows you to “pin” data, keeping it visible on the screen even when you scroll.
   This is useful for headers or data that you need to refer to constantly.
   To freeze, go to “View” > “Freeze” and choose the number of rows or columns to freeze.
3. Using Apps Script to “Ping” IP Addresses:
   You can use Google Apps Script to check if a specific IP address is reachable, essentially “pinging” it.
   This involves writing a script that sends an ICMP request to the IP address and checks for a response.
   The script can then populate a cell in your sheet with a “True” or “False” value, indicating whether the address is reachable.
   Example of using Apps Script to ping:

function pingIpAddress() {
  // Replace 'A1' with the cell containing the IP address you want to ping
  var ipAddress = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getRange("A1").getValue();

  // Check if the IP address is reachable
  var url = 'https://ipinfo.io/ip?token=YOUR_TOKEN'; // Replace YOUR_TOKEN with your ipinfo token
  var options = {
    'method': 'get',
    'contentType': 'application/json'
  };

  var response = UrlFetchApp.fetch(url, options);
  var json = JSON.parse(response.getContentText());
  var ip = json.ip;

  SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getRange("B1").setValue(ipAddress==ip?"True":"False");
}