In a question with units input I try to generate the math stuff in the general feedback using Maxima expressions and {@...@} in order to be more readible at editing time.

However, I wonder why an expression like

\\[{@'Lambda=ln(A(t)/A(t+T_d))@}\\]

is displayed as

What I am unhappy with is the large space between A and () and A and T being roman instead of italic.

\\[\Lambda=\ln\left(\frac{A(t)}{A(t+T_d)}\right)\\]

Where can I find a reference on what to expect in which situation?