In a parameterized R Markdown report, how do you access parameters with multiple sub-key values? For example, from https://bookdown.org/yihui/rmarkdown/params-knit.html the following yaml is used
---
title: My Document
output: html_document
params:
year:
label: "Year"
value: 2017
input: slider
min: 2010
max: 2018
step: 1
sep: ""
However, nothing except for params$year$value seems to be passed to the main body of the report.
Knitting the following shows that only the value is in the params list, but none of the other entries are available. Note the final missing back tick in the Rmarkdown code if copy/pasting to RStudio
---
title: "My Document"
output: html_document
params:
minimum:
label: "Minimum:"
value: 100
input: slider
min: 0
max: 1000
---
```{r}
print(params)
``
Knitting the above results in:

I would expect there to be more entries available. When you read the same yaml in with yaml::read_yaml(), you get the following:
$title
[1] "My Document"
$output
[1] "html_document"
$params
$params$minimum
$params$minimum$label
[1] "Minimum:"
$params$minimum$value
[1] 100
$params$minimum$input
[1] "slider"
$params$minimum$min
[1] 0
$params$minimum$max
[1] 1000
Is it possible to access params$minimum$input, params$minimum$max, etc. from the R Markdown doc?