Inserting Line Studies Tools on the MT4 Platform
The subsequent option under the 'Insert' menu within the MT4 application is the 'Line Studies Button.' These tools are designated for drawing trend lines or overlaying various analytical instruments onto charts, and this button is displayed below:

Line Studies in MT4 Platform
The button can be used to insert the following on Gold charts:
- Vertical Line
- Horizontal Line
- Trend Line
- Trend by Angle
People may need to put these lines on XAUUSD charts for different reasons related to trading or studying the market: each line will be put on the chart based on what kind of study someone wants to do.
Vertical Line
This feature is added to the Trading chart when a trader wishes to mark a specific moment, perhaps noting the precise time an instrument was bought or an XAUUSD position was sold. To insert this vertical marker, the trader navigates to the 'Insert' menu (as illustrated above), selects the 'Vertical Line' option. The cursor will transform into a vertical line icon, which is then positioned on the chart at the desired location to draw the line.

Insert a Vertical To a Gold Chart in the MetaTrader 4 Platform
Horizontal Line
On the MT4 platform, this line is put on the Trading chart to show where prices might meet resistance or find support. You can draw the line by picking its button in the insert menu and then clicking where you want to put it on the chart.

Drawing a Horizontal Line in MetaTrader 4 Platform Software
In the illustration provided, this horizontal line is charted at a gold price support level: the price reverses upward on the second instance it reaches this specific point. Subsequently, the trend shifts toward an upward trajectory.
Trend Line
This is one of most often used technical analysis tool in xauusd. To draw this trendline a trader can access this button key from the insert menu. An upwards trend line on MT4 is displayed below.

Trend Line Drawn in the MT4 Platform
To draw a trendline a trader has to have two points & join these points with the trendline & then extend it as is displayed above.
One can draw this trendline for either an upward trend direction or downwards trend direction
Trend Line by Angle
The next option is to draw a trend by angle, this one resembles the ordinary trendline shown above, only that in addition it'll show the angle at which the trend-line is slanting which many trades might use as a signal & specify to only trade if the angle is more than 30 degrees.
Customizing
As a trader you may want to change the output format of a specific item e.g. let use "Trend Line" study, if you want to edit its properties then you can select it by doubleclicking on it, then right click the it & the following menu will show.

Changing
Common Properties
After the above menu pops up (Note the trend-line has three square points which you can click and drag using your mouse to adjust it to another point using these 3 squares), select the first option only "Trend Line Properties", the following pop up window will appear.

In this menu, it is possible to rename the trendline, provide a description, change its color by using the dropdown arrow adjacent to the labeled color "Blue" above, or adjust the width by selecting different styles from the two dropdown arrows by the color button, and then confirm by choosing okay.
The other options are marked "Parameters" & "Visualization"
Parameters
To extend a trendline, check or uncheck the "Ray" option. This stretches the line to your chosen point. Download MetaTrader to see it in action.

Visualization
Visualization lets you decide if the line shows up on all time frames or just some, which traders can pick from the choices given, as shown below in this visual.

Customizing Tools MT4 Studies
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