grob.md
In marquee: Markdown Parser and Renderer for R Graphics

grobs gets correctly constructed

`hjust` must be a valid justification
i Use either numerics or one of "left", "left-ink", "center", "center-ink", "right-ink", or "right"

`hjust` must either be numeric or a character vector

`vjust` must be a valid justification
i Use either a numerics or one of "bottom", "bottom-ink", "last-line", "center", "center-ink", "first-line", "top-ink", or "top"

`hjust` must either be numeric or a character vector

Code
  grob1$blocks
Output
  $length
   [1]  1  1 15  3  1  1  1  1  1  1  3  1  7  1  1  1  1  1  1  1  1  1  1  1  1
  [26]  1  1  1  1  1  1  5

  $start
   [1]  1  2  3 18 21 22 23 24 25 26 27 30 31 38 39 40 41 42 43 44 45 46 47 48 49
  [26] 50 51 52 53 54 55 56

  $indent
   [1] 1 2 2 2 2 3 3 4 4 3 2 2 2 2 2 3 4 3 4 4 5 6 6 7 8 8 6 7 3 4 2 2

Code
  grob1$bullets
Output
  $bullet
  [1] "1." "2." "1." "2." "3." "•"  "1."

  $index
  [1] 24 25 40 42 53 45 48

  $placement
  [1] 24 25 41 43 54 46 49

  $shape
  $shape$shape
  # A tibble: 13 x 14
     glyph index metric_id string_id x_offset y_offset font_path        font_index
     <int> <int>     <int>     <int>    <dbl>    <dbl> <chr>                 <int>
   1     1    20         1         1   -10.0     -9.24 /System/Library~          0
   2     2    17         1         1    -3.33    -9.24 /System/Library~          0
   3     1    21         2         2   -10.0     -9.24 /System/Library~          0
   4     2    17         2         2    -3.33    -9.24 /System/Library~          0
   5     1    20         3         3   -10.0     -9.24 /System/Library~          0
   6     2    17         3         3    -3.33    -9.24 /System/Library~          0
   7     1    21         4         4   -10.0     -9.24 /System/Library~          0
   8     2    17         4         4    -3.33    -9.24 /System/Library~          0
   9     1    22         5         5   -10.0     -9.24 /System/Library~          0
  10     2    17         5         5    -3.33    -9.24 /System/Library~          0
  11     1   135         6         6    -4.20    -9.24 /System/Library~          0
  12     1    20         7         7   -10.0     -9.24 /System/Library~          0
  13     2    17         7         7    -3.33    -9.24 /System/Library~          0
  # i 6 more variables: font_size <dbl>, advance <dbl>, ascender <dbl>,
  #   descender <dbl>, col <chr>, id <int>

  $shape$metrics
  # A tibble: 7 x 11
    string width height left_bearing right_bearing top_bearing bottom_bearing
    <chr>  <dbl>  <dbl>        <dbl>         <dbl>       <dbl>          <dbl>
  1 1.     10.0      12        1.15          1.08        0.885           2.76
  2 2.     10.0      12        0.375         1.08        0.819           2.76
  3 1.     10.0      12        1.15          1.08        0.885           2.76
  4 2.     10.0      12        0.375         1.08        0.819           2.76
  5 3.     10.0      12        0.287         1.08        0.838           2.53
  6 •       4.20     12        0.874         0.739       3.65            2.76
  7 1.     10.0      12        1.15          1.08        0.885           2.76
  # i 4 more variables: left_border <dbl>, top_border <dbl>, pen_x <dbl>,
  #   pen_y <dbl>