Conditional printing in the pre-built Document Generator function

Description (Required):

I miss conditional printing (not the FILTER option) in the Document Generator. Something like

I am a {job}{#if:job='manager'} for department {department}{/if:job='manager'}.

and

{#if:amount<>0}Your account will be {#if:amount>0} credited{#else} debited{/if:amount>0} for the amount of {amount}.{/if:amount<>0}

Use Case and Business Need (Required):

Many documents have to print text based on some condition on the input.