Is there a way using excel macros to alter font properties for text before a line break in one cell?

I found a way to alter parts of cell text by number but I need to make text on the first line (before ALT-Enter is used for a carriage return) bold, larger font and underlined within the same cell for a heading.

If there isn't a way to do this, can I do it by detecting the first / last words of a string of text (which will always be the same - the middle will change)?

All help / suggestions much appreciated. Thanks.

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