 
            
        xfce4-terminal:tldr:14e28  
        This command is used to open a new terminal window in XFCE4 and run two separate commands in different tabs.
Here is a breakdown of the command:
- 
xfce4-terminal: This is the command to open a new terminal window in XFCE4.
- 
--tab: This option is used to open a new tab within the terminal window.
- 
--command "${command_a}": This option specifies the command to be executed in the first tab.${command_a}is a variable that holds a command. When the command is executed, it will be replaced by the actual value of${command_a}.
- 
--tab: This option is used again to open another tab within the same terminal window.
- 
--command "${command_b}": This option specifies the command to be executed in the second tab.${command_b}is a variable that holds a command. Similar to the first command, when executed, it will be replaced by the actual value of${command_b}.
So, essentially, this command opens a new terminal window with two tabs and runs different commands in each tab. The actual commands to be executed are defined by the variables ${command_a} and ${command_b}.