# Re: [NTG-context] Reg. fonts and math

```<--- On Jan 14, Adam Duck wrote --->

```
`Just to give you some hints what's already there...`
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< 63 lines deleted by Adam Duck >
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```1. Have align support with variable number of columns.
a &= b
&= c &+ d
&    &+ e

should be typeset as

a = b
= c + d
+ e
```
```
At least this should be possible with \wall and \return (using the
"nath" module), like this:

#v+
a \wall = b \\
= c \wall + d \\
+ e
\return\return
#v-
```
```

```
Unfortunately, if I use nath, I can not use underbrace inside \startstop align of nath. See a previous post of mine with the subject 'Nath bug?'. It will be nice if I can use both solutions.
```

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```< 20 lines deleted by Adam Duck >
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```5. have a splitformula environment that allows

a =& b
& + c \\
& + d

to come out as

a = b
+ c
+ e        (1)

with only one formula number. The formula number should be at the last
line or the center of the whole formula, configurable by an option.
```
```< 142 lines deleted by Adam Duck >

Again, this is a \wall-\return thingy, but \placeformula places the
number vertically centered...
```
```
```
Is there someway in which the formula numbering can be forced to be at the bottom. Maybe by adding an option to setupformulae. Latex has a class option ctags/tbtags which controls this.
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```[ useful example snipped]
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```
Thanks,